The HIPAA Security Rule is a critical part of The Health Insurance Portability and Accountability Act (HIPAA): legislation specifically designed to establish national security standards to protect the electronic protected health information (ePHI) held by healthcare organizations. Compliance with the HIPAA Security Rule is essential for safeguarding sensitive patient data against security breaches, cyber threats and even physical damage.
However, as cyber threats grow in both variety and, more alarmingly, sophistication and technological advancements, the Office for Civil Rights (OCR), which enforces the Security Rule, has proposed updates to further strengthen the data security and risk management postures of healthcare organizations.
In light of these upcoming changes to the HIPAA Security Rule and their importance to healthcare organizations, this post details the existing HIPAA Security Rule and what it entails. From there, we’ll look at the proposed modifications to the HIPAA Security Rule, helping you to understand how it will affect your organization going forward and, subsequently, how to best prepare for potential changes coming later this year to remain compliant.
What is the HIPAA Security Rule?
Added to HIPAA in 2003, the SecurityRule introduced a series of mandatory safeguards to protect the increasing amount of digital data, i.e., ePHI, and the increasing prevalence of electronic health record (EHR) systems, customer data platforms (CDPs) and revenue cycle management (RCM) platforms.
The HIPAA Security Rule centers around three fundamental categories of safeguards:
Administrative Safeguards
Riskmodeling: frequent risk assessments to identify, categorize, and manage security risks.
Workforcesecuritypolicies: including role-based access controls.
Contingency planning for emergency access to ePHI: i.e., disaster recovery and business continuity planning.
Technical Safeguards
Access controls: implementing controls to restrict access to ePHI, e.g., Zero Trust, user authentication, and automatic timeouts.
Audit controls: to track access to sensitive patient data.
Encryption protocols: to protect ePHI end-to-end, in transit and at rest.
Physical Safeguards
Onsite security measures: to prevent unauthorized physical access, e.g., locks, keycards, etc.
Surveillance equipment: cameras and alarms, for example, to signal unauthorized access.
Secure disposal of redundant hardware: devices containing ePHI must be properly disposed of by companies that specialize in data destruction.
The HIPAA Security Rule: The Dangers of Non-Compliance
Consequently, should a healthcare company fail to comply with the safeguards outlined in the HIPAA Security Rule, it can result in severe consequences, including:
Civil penalties: up to $2.1 million per violation; repeat offenses can result in multi-million dollar settlements.
Criminal charges: for willful neglect, unauthorized collection of ePHI, and, the malicious use of patient data (including its sale). This can result in up to 10 years in prison.
Reputational damage: demonstrating an inability to secure ePHI results in a loss of patient trust, making them less inclined to purchase your services or products. More alarmingly, cybercriminals will also become aware that your company’s IT infrastructure is vulnerable, which could invite more attempts to infiltrate your network and steal ePHI.
Proposed Updates to the HIPAA Security Rule
Now that we’ve discussed the present HIPAA Security Rule, and the consequences for failing to implement its required threat mitigation measures, let’s turn our attention to the proposed changes to the Security Rule, which were announced by the U.S. Department of Health and Human Services (HHS) in December, 2024, and how they will affect healthcare organizations.
Mandatory Encryption for All ePHI Transmission
The proposed updates require end-to-end encryption for emails, messages, and data transfers involving ePHI, making all implementation specifications required with specific, limited exceptions. This means that patient data must be encrypted in transit, i.e., from one place to another (when collected in a secure form, sent in an email, etc.), and in storage, i.e., where it will reside.
To accommodate these changes, many healthcare organizations will need to upgrade to HIPAA-compliant email solutions, for their outreach requirements, as well as encrypted databases to store the ePHI in their care.
Expanded MFA Requirements
Healthcare providers must implement Multi-Factor Authentication (MFA) for all personnel with access to ePHI. MFA moves beyond usernames and passwords, requiring users to prove their identity in more than one way.
This could include:
One-time passwords (OTPs) via email, an app, or a physical security dongle (e.g., an RSA token)
Access cards or Fobbs
Biometric identification, such as retina scans, fingerprints, or voice recognition.
This proposed rule change addresses increasing risks from phishing and other credential-based attacks, in which malicious actors acquire employee login details to access ePHI.
Stronger Risk Management and Third-Party Security Controls
Healthcare organizations must conduct more frequent risk assessments to identify, categorize, and mitigate threats to ePHI. A considerable part of this is implementing stricter security controls for business associates who have access to the healthcare company’s ePHI.
A business associate could be a software vendor with which an organization processes patient data, or it could be a supplier or partner that requires access to ePHI to fulfill its operational duties. In light of this, one of the proposed changes to the HIPAA security rule is that vendor security audits will become more mandatory rather than optional.
New Incident Response (IR) and Breach Reporting Rules
The new rule changes emphasize stricter breach notification timelines for healthcare entities and the business associates that handle ePHI on their behalf. This means that healthcare companies are obligated to inform affected parties of a data breach as soon as possible.
For healthcare companies, this means devising, or strengthening, continuous monitoring protocols, so their security teams become aware of suspicious activity as as soon as possible and can accurately communicate their containment efforts and take the neccessary actions to mitigate damages.
Preparing For The Changes to the HIPAA Security Rule: Next Steps for Healthcare Organizations
As the proposed changes to the HIPAA Security Rule move forward, and are likely to go into effect by the end of this year, healthcare organizations can prepare by:
✔ Conducting frequent risk assessments to pinpoint vulnerabilities to the ePHI in IT ecosystems. This should be done annually, at least – or when changes are made to IT infrastructure that may affect ePHI.
✔ Evaluating existing email and communication platforms to ensure compliance with encryption and authentication requirements, especially under the newly proposed security rule and its requirements.
✔ Hardening your organization’s cybersecurity posture by considering the implementation of network segmentation, zero-trust security principles, and data loss protection (DLP) protocols.
✔ Strengthening vendor risk management to ensure third-party service providers meet HIPAA compliance standards and that you have a Business Associate Agreement in place.
How the Proposed Changes to the HIPAA Security Rule Affect Healthcare Communications and Email Security
One of the most significant implications of the proposed changes to the Security Rule is the heightened focus on secure email communications involving ePHI. Key takeaways for secure healthcare email include:
Encryption is now essential: healthcare organizations relying on unencrypted email delivery platforms to communicate with patients will need to switch to secure, HIPAA-compliant email solutions with the appropriate encryption capabilities.
Email providers must meet stronger compliance standards: if your current email service provider doesn’t support automatic encryption, for instance, it may be non-compliant under the new rule.
Stronger authentication for email access: healthcare professionals sending or receiving ePHI via email must implement MFA and similar, robust access control protocols.
With email communication being a key part of patient outreach and engagement, it’s vital for healthcare companies to identify and address security gaps in their IT infrastructure, and prepare for the coming changes to the HIPAA security rule.
Changes to the HIPAA Security Rule: Final Thoughts
The HIPAA Security Rule remains the foundation for protecting ePHI within healthcare organizations. The proposed updates to the Security Rule reflect the growing need for stronger cybersecurity controls in healthcare. The stark reality is that patient data is, and always will be, sensitive and, as such, will always be a valuable target for cybercriminals.
In light of the persistent and growing threat to ePHI, healthcare organizations that fail to proactively address the requirements brought forth by the proposed changes to the HIPAA Security Rule risk data breaches, financial penalties and other punitive action.
If you have questions about HIPAA compliant secure email, encryption, or how the coming changes to the Security Rule will impact your healthcare communications, contact LuxSci today for expert guidance.
Pete Wermter
As a marketing leader with more than 20 years of experience in enterprise software marketing, Pete's career includes a mix of corporate and field marketing roles, stretching from Silicon Valley to the EMEA and APAC regions, with a focus on data protection and optimizing engagement for regulated industries, such as healthcare and financial services.
Pete Wermter — LinkedIn
Secure email is not the same as “email with encryption turned on.” True secure email requires enforced automated encryption, a signed BAA, access controls, audit logs, and documented processes — not just a feature toggle.
Standard email platforms like Gmail and Microsoft 365 rely on opportunistic TLS by default, which can silently fall back to unencrypted delivery if the recipient’s server doesn’t support encryption.
HIPAA’s encryption safe harbor means a misdirected but properly encrypted email is a non-event. The same email sent unencrypted is a presumed breach unless a risk assessment shows otherwise.
A signed Business Associate Agreement (BAA) with your email provider is non-negotiable — without one, you cannot legally send or store PHI through that provider.
The proposed 2025 HIPAA Security Rule update, planned for finalization in 2027, would make encryption of ePHI in transit and at rest a mandatory requirement rather than “addressable,” raising the stakes for organizations still relying on opportunistic TLS.
Best for: Healthcare IT Directors, Compliance Officers, Privacy Officers, and Marketing Managers at provider, payer, and supplier organizations that handle protected health information (PHI).
In healthcare IT, the term “secure email” gets thrown around loosely. Vendors slap the label on anything with a padlock icon, and internal teams often assume that because their provider offers TLS, they’re covered. They’re not, and the gap between what’s assumed and what’s actually required is where data breaches occur and HIPAA violations happen.
This guide breaks down exactly what secure email means from a technical and regulatory standpoint, why the email platform your staff uses every day probably isn’t compliant out of the box, and what to look for when evaluating a provider that needs to protect PHI at scale. If you want the full picture of what compliance requires beyond email specifically, our HIPAA Compliance Checklist is a useful companion read.
What Is Secure Email?
Secure email refers to an email system that protects the confidentiality, integrity, and availability of message content — specifically PHI — through a combination of technical safeguards and contractual protections. It’s not a single feature. It’s a stack of controls working together.
At minimum, secure email in a healthcare context includes:
Enforced encryption in transit, so messages can’t fall back to plaintext delivery
Encryption at rest, so stored messages remain protected on the server
Authentication protocols (SPF, DKIM, DMARC) that prevent spoofing and impersonation
Access controls and audit logs that track who accessed what, and when
A signed Business Associate Agreement (BAA) with the email provider
The distinction that trips up most organizations is this: encryption is a component of secure email, not the whole picture. A provider can offer encryption and still fail to meet HIPAA requirements if that encryption isn’t enforced, if there’s no BAA in place, or if audit logging doesn’t exist. Secure email is the combination of all these pieces functioning as a system, which is why it needs to be evaluated holistically rather than checked off feature by feature.
For healthcare provider, payer, and supplier organizations, this matters because email remains one of the highest-volume channels for PHI exposure, from clinical referrals to patient billing statements to routine staff communication. Getting the definition right is the first step toward closing the compliance gap.
Why Standard Email Is Not HIPAA-Compliant
Many healthcare organizations run on Gmail (Google Workspace) or Microsoft 365, and most assume they’re protected because encryption exists somewhere in the stack. That assumption is the single most common — and most dangerous — misconception in healthcare email security.
Here’s the problem: standard email services use opportunistic TLS by default. TLS is attempted between mail servers, but if the receiving server doesn’t support it, the message is delivered anyway — unencrypted, in plaintext. Neither the sender nor the recipient typically sees a warning. The email just goes through.
This isn’t a hypothetical edge case. IT professionals managing healthcare email infrastructure have flagged this exact issue directly: opportunistic TLS is often enabled by default and creates a false sense of security, since it offers no guarantee that a given message, including one containing PHI, won’t be transmitted in plaintext if the recipient’s mail server doesn’t support encryption. Organizations assume they’re protected simply because TLS is technically “on,” without realizing it isn’t enforced.
That gap has real consequences under HIPAA. The Security Rule currently treats transmission encryption as an “addressable” safeguard, meaning covered entities can, in theory, implement an equivalent alternative measure instead. In practice, regulators and auditors from the Office for Civil Rights (OCR) expect enforced encryption as the standard of care. “Addressable” has never meant optional — it means an organization needs a documented, defensible reason if it isn’t doing enforced encryption, and few reasons hold up under scrutiny. Finally, under OCR’s proposed changes to the HIPAA Security Rule for ePHI, scheduled for final publication in July 2027, email encryption moves from addressable to mandatory.
Beyond the encryption gap, standard consumer and even most business email plans typically lack:
A BAA that’s actually offered and signed (available on some enterprise tiers, but not automatic)
Audit logging sufficient to meet HIPAA Security Rule requirements
Built-in encryption at rest guarantees for stored messages
None of this means Gmail or Microsoft 365 are inherently insecure products. It means their default configuration is built for general business use, not for an environment where every misrouted or intercepted message carries breach notification liability. Making either platform HIPAA-appropriate requires layering on additional tools, policies, and critically, a provider relationship that includes a signed BAA covering the exact services in use.
The Technical Components of Secure Email
Secure email is built upon five technical layers. Understanding each one, and where it fails in standard email, clarifies exactly what a compliant solution needs to deliver.
Encryption in Transit (TLS)
Transport Layer Security (TLS) encrypts the connection between mail servers as a message travels from sender to recipient. There are two flavors, and the difference between them is the crux of most healthcare email compliance failures:
Opportunistic TLS attempts an encrypted connection but falls back to unencrypted delivery if the receiving server doesn’t support it. This is the default across most consumer and business email platforms.
Enforced TLS requires an encrypted connection for delivery to succeed. If encryption can’t be established, the message fails to send rather than going out in plaintext, or a link to secure portal can be sent to securely access the information.
HIPAA’s Security Rule lists encryption as addressable, but enforced TLS has become the de facto standard that auditors and OCR expect from covered entities and business associates handling PHI over email. As one healthcare IT professional put it while debating this exact tradeoff internally: the goal is to require TLS for all outbound email and then document the remaining controls around it, treating enforced TLS as the technical baseline, with policy and process built on top.
Encryption at Rest
Transit encryption only protects a message while it’s moving. Once it lands on a mail server — sender’s outbox, recipient’s inbox, backups, archives — it needs to remain encrypted in storage. This is encryption at rest, and it’s where many organizations underestimate their exposure.
Encryption in transit alone offers zero control over a message after it’s been delivered. If the destination server isn’t itself encrypting stored data, or if a backup snapshot is taken without encryption, PHI sitting in an inbox is exposed regardless of how securely it arrived. HIPAA’s Security Rule requires safeguards for ePHI both in transit and at rest, a compliant secure email provider needs to guarantee both, not just one.
End-to-End Encryption (S/MIME, PGP)
End-to-end encryption (E2EE) encrypts message content itself, not just the connection it travels over — meaning even the email provider can’t read the content. Two standards dominate here:
S/MIME uses certificate-based encryption and is common in enterprise environments, such as healthcare, particularly where organizations already manage a public key infrastructure.
PGP (Pretty Good Privacy) uses a public/private key model and is more common in technical or security-conscious communities, though it’s less frequently deployed at scale in healthcare due to key management complexity.
E2EE isn’t a baseline requirement for every PHI-containing email, enforced TLS plus encryption at rest satisfies most use cases. But it becomes necessary for especially sensitive communications, cross-organization data sharing where you don’t control the recipient’s infrastructure, or when a business associate agreement specifically requires it.
Authentication (SPF, DKIM, DMARC)
These three protocols work together to prevent domain spoofing and email impersonation, a growing attack vector against healthcare organizations specifically, given how often phishing campaigns impersonate providers, payers, or patients.
SPF (Sender Policy Framework) specifies which mail servers are authorized to send email on behalf of a domain.
DKIM (DomainKeys Identified Mail) adds a cryptographic signature verifying a message wasn’t altered in transit.
DMARC (Domain-based Message Authentication, Reporting & Conformance) tells receiving servers what to do when SPF or DKIM checks fail, and provides reporting visibility.
Without these configured correctly, an organization’s domain can be spoofed to send convincing phishing emails to patients or staff, creating a security failure that compounds the compliance risk of email interception.
Digital Signatures
Digital signatures verify sender identity and confirm a message hasn’t been tampered with between sending and receipt. Paired with encryption, they close the loop on message integrity, confirming not just that content was protected, but that it came from who it claims to have come from and arrived unaltered.
Standard Email vs. Secure Email: Feature Comparison
Feature
Standard Email
Secure Email (HIPAA-Compliant)
Encryption in Transit
Opportunistic TLS — attempted but not enforced
Enforced TLS — connection fails if encryption unavailable, can include delivery via secure portal option
Encryption at Rest
Not guaranteed; provider-dependent
Required — server-side encryption of stored messages
End-to-End Encryption
Not available
Supported via S/MIME and/or PGP
Digital Signatures
Not available
Included — verifies sender identity and message integrity
Authentication (SPF / DKIM / DMARC)
Optional, rarely enforced
Required — spoofing and impersonation protection
Business Associate Agreement (BAA)
Not provided on standard plans
Required — must be signed before sending PHI
Audit Logs
Basic or none
Full audit trail — required under HIPAA Security Rule
Access Controls
Basic password only
Role-based access, MFA, admin controls
Misdirected Email
Reportable HIPAA breach
Non-reportable if properly encrypted (safe harbor)
HIPAA Compliant by Default
No
Yes
What Makes Email HIPAA-Compliant Specifically
Technical safeguards alone don’t make email HIPAA-compliant. Compliance is a combination of technology, contracts, and documented processes — all four need to be in place simultaneously. This includes:
A signed BAA with your email provider – Any vendor that transmits, processes, or stores PHI on your behalf is a business associate under HIPAA, and business associates are legally required to sign a BAA before handling that data. Email providers have persistent access to ePHI — even end-to-end encrypted messages pass through their infrastructure at some point — which makes this requirement absolute, not situational. If a provider won’t sign a BAA, using them to send or store PHI isn’t a compliance risk you can mitigate; it’s a violation from the start.
Encryption as an addressable safeguard – Under 45 CFR §164.312(e)(2)(ii), the HIPAA Security Rule lists encryption of ePHI in transit as “addressable” rather than strictly “required.” In practice, this doesn’t mean optional, it means an organization must implement it, or document and justify an equivalent alternative safeguard. Enforced encryption has become the expected standard, and with the newly proposed HIPAA Security Rule planned for July 2027 publication, NPRM would formalize that expectation by making encryption of ePHI in transit and at rest mandatory rather than addressable. Organizations still relying on opportunistic TLS as their “equivalent alternative” should treat this as a closing window.
Access controls and audit logs – HIPAA requires the ability to track who accessed PHI, when, and what they did with it. This means role-based access permissions, multi-factor authentication, and a complete, retained audit trail — not just for compliance reporting, but for identifying and responding to incidents quickly.
The encryption safe harbor – This is one of the most consequential, and most underused, provisions in HIPAA. If PHI is sent via properly encrypted email and ends up misdirected to the wrong recipient, it is not a reportable breach under the Breach Notification Rule, because the encrypted content is considered unreadable and therefore not “unsecured PHI.” The exact same misdirection with unencrypted email is a reportable breach, triggering notification obligations to the individual and to HHS/OCR. Encryption isn’t just a security best practice here, it’s the line between a non-event and a formal breach investigation.
HITRUST certification as a trust signal – When evaluating vendors, HITRUST CSF certification is a strong external indicator that a provider’s security controls have been independently assessed against a recognized healthcare-specific framework. It’s not a HIPAA requirement in itself, but it meaningfully reduces the diligence burden on your side when vetting a provider.
Types of Healthcare Email That Must Be Secure
Not all internal debate here is about “should we secure email” — it’s about scope. Which specific email flows actually carry PHI, and therefore need to run through a compliant channel? In practice, the answer is broader than most teams initially assume.
The common thread: if a message references anything that could identify a patient in connection with health information — a name next to a diagnosis, an account number tied to a service date, an annual test reminder — it needs to move through a secure channel, regardless of whether it’s clinical, financial, or administrative in nature.
How to Evaluate a Secure Email Provider for Healthcare
Vendor evaluation in this category tends to go one of two ways: teams either take a provider’s “HIPAA-compliant” label at face value, or they get buried in RFP questions without knowing which answers actually matter. Ask these key questiosn to focus the evaluation on what’s operationally and legally significant.
“Does the provider sign a BAA? This is the first filter, not the last. If a vendor won’t sign a BAA — or offers a heavily limited one — everything else is irrelevant. Some organizations go a step further and negotiate indemnity or make-whole clauses into the BAA itself, seeking financial protection beyond the baseline liability allocation.
What encryption methods are supported? Confirm specifically whether the provider offers TLS only, or also supports S/MIME and/or PGP for end-to-end encryption where needed. TLS-only coverage is sufficient for most standard PHI communication; organizations with cross-border data sharing or especially sensitive use cases may need E2EE options available.
Is encryption enforced or opportunistic? This is the single most important technical question to ask directly, in those terms. A vendor that describes its encryption vaguely, without distinguishing enforced from opportunistic delivery, hasn’t answered the question. Push for specifics.
How are large attachments handled? Lab results, imaging files, and clinical documents often exceed standard attachment size limits. Confirm the provider has a secure, compliant method for large file transfer that doesn’t force users onto an unencrypted workaround.
What audit logging and reporting capabilities exist? You need visibility into delivery, access, and any failed encryption attempts, not just a generic sent/received log. Ask whether logs are retained for a period consistent with your organization’s HIPAA documentation requirements.
Do they support high-volume transactional email? Appointment reminders, billing notices, and patient communications at scale require infrastructure built for volume without sacrificing per-message compliance. Confirm the provider’s platform is built for this your specific pattern, not just person-to-person messaging.
Is the platform US-based with US data residency? For many healthcare organizations, where data physically resides — and under which jurisdiction — is a material factor in vendor risk assessment, particularly for payers and larger provider organizations with strict data governance policies.”
One operational factor worth weighing alongside these questions: secure email portals — the kind that require recipients to click through to a separate web page to read a message — solve the encryption problem but often create a real adoption problem. IT teams have reported a direct conflict between phishing-awareness training and portal-based workflows: staff and patients trained not to click suspicious links in emails are, understandably, reluctant to click the “secure link” a portal email contains. This is a legitimate reason many organizations increasingly prefer platforms that enforce encryption transparently in the background — like LuxSci’s SecureLine encryption technology — rather than routing every message through a separate portal experience.
Secure Email Checklist for Healthcare Organizations
Every safeguard covered in this guide comes down to a handful of concrete, verifiable actions. Use the checklist below as a working reference for what needs to be in place across your legal agreements, technical controls, and internal processes. This is not a one-time setup task, but something worth revisiting as your email volume, vendors, and regulations evolve. Share it across your compliance and IT teams as a starting point for an internal audit.
Legal and Contractual – BAA signed with email provider and all third-party vendors handling PHI.
Encryption – Forced TLS, not opportunistic only for emails in transit and all stored data encrypted with AES-256 bit encryption.
Access and Audit – Unique user IDs, role-based access, and login monitoring with advanced MFA enabled for all email accounts; audit logs active and maintained.
People and Processes – Staff trained in PHI handling, established breach response plan, annual email security policy review.
What Should I Do Now?
Secure email isn’t a single setting you switch on — it’s a combination of enforced encryption, a signed BAA, access controls, and documented process working together. Get any one piece wrong, and the rest doesn’t hold up under an OCR audit or a breach investigation.
If your organization is still relying on opportunistic TLS, an unsigned or incomplete BAA, or a patchwork of workarounds to move PHI through email, now is the time to close that gap, especially with the proposed 2025 HIPAA Security Rule update poised to make encryption a mandatory requirement rather than an addressable one in 2027.
Below are three ways you can continue your journey to securing your healthcare email:
Email can be HIPAA compliant, but only when the right safeguards are in place — enforced encryption, a signed BAA with your email provider, access controls, audit logs, and staff training on PHI handling. Standard email without these safeguards is not compliant.
2. Do I need to sign a BAA with my email provider?
Yes. Email providers have persistent access to ePHI — even encrypted messages pass through their servers — making them Business Associates under HIPAA. A signed BAA is required. If your provider won’t sign one, you cannot legally use them to send or store PHI.
3. What is the difference between opportunistic TLS and enforced TLS — and which does HIPAA require?
Opportunistic TLS attempts encryption but falls back to plaintext if the recipient’s server doesn’t support it. Enforced TLS stops delivery rather than sending unencrypted. HIPAA’s Security Rule treats transmission encryption as an addressable specification, in practice, enforced TLS is the standard auditors and OCR expect. The proposed 2025 HIPAA Security Rule NPRM would make encryption of ePHI in transit a mandatory requirement in 2027.
4. What happens if I send PHI in an unencrypted email?
It is an impermissible disclosure under HIPAA’s Privacy Rule and triggers the Breach Notification Rule, requiring you to notify the individual and HHS/OCR within 60 days. Penalties range from $100 to $50,000 per violation. Had the email been properly encrypted, the same incident would qualify for HIPAA’s encryption safe harbor, meaning no notification required.
5. Is Gmail or Microsoft 365 HIPAA compliant for sending patient emails?
Neither is compliant in their default configuration. Both use opportunistic TLS, meaning PHI can be sent in plaintext if the recipient’s server doesn’t support encryption. A signed BAA is available on enterprise plans but doesn’t close the technical gap alone. A purpose-built HIPAA-compliant email platform is the reliable solution.
If you’ve been waiting for the final word on the new HIPAA Security Rule before you touch your email encryption strategy, you now have an official reason to keep waiting.
Our advice: Don’t do it.
What is the new HIPAA Security Rule for ePHI?
The Department of Health and Human Services’ Office for Civil Rights had targeted May 2026 for a final rule implementing the most significant update to the HIPAA Security Rule in over two decades. The proposal eliminates the “addressable” standard and makes encryption of ePHI in transit and at rest mandatory for every covered entity and business associate. That deadline came and went quietly. Now we know why: an updated federal regulatory agenda shows OCR’s timeline has moved to July 2027, with the rule-making downgraded from “final rule stage” to “long-term action.” OCR is still working through more than 4,700 public comments on the January 2025 proposal.
For an industry that had been expecting a tighter deadline, a year-plus delay is the kind of news that invites a collective exhale — and a shelved project plan. At LuxSci, we think that would be a mistake, for three reasons:
The current rule already requires you to address encryption. “Addressable” was never “optional.” It has always meant you must implement the safeguard, implement an equivalent alternative, or document in writing why neither is reasonable for your organization. Most healthcare organizations have never done that documentation rigorously, and OCR’s existing enforcement authority applies today, not in 2027.
Breach costs haven’t waited for the rule.IBM’s 2025 Cost of a Data Breach Report puts the average healthcare breach at $7.42 million, still the highest of any industry. At the same time, email remains the number one attack vector into healthcare organizations. None of that risk is paused by a regulatory delay.
Delay is not withdrawal.OCR has not signaled it’s abandoning the encryption mandate, only that it’s taking longer to finalize it. Organizations that build now toward the standard already proposed will be ahead (and more secure) regardless of exactly when, or in what final form, the rule lands. Organizations that wait risk a compressed scramble once it does.
What should healthcare IT and compliance leaders actually do with this news?
Reevaluate your ePHI security posture, recalibrate its urgency, and use the extra runway to do the job right, instead of racing against a deadline. This includes:
Getting a real inventory of where ePHI moves by email today, inbound and outbound, and where encryption is inconsistent or absent.
Closing the documentation gap on “addressable” now, while you have time to do it well rather than defensively.
Pushing your email vendor for concrete answers on encryption standards, MFA enforcement, audit logging, and breach notification — the same technical controls the proposed rule would make mandatory.
Building (or updating) a written, enforcement-ready posture: policies, vendor agreements, certifications and verifications, test results, and training records that would hold up under an OCR investigation today, not just in a future compliance deadline.
Get LuxSci’s new Definitive Guide on the new HIPAA Security Rule
From Addressable to Mandatory: Email Encryption Under the New HIPAA Security Rule provides the latest update on the rule, what it means for healthcare email encryption, and what you can do now to properly prepare for what’s coming in 2027. The guide also includes an interactive scorecard that lets you evaluate your current email set up and vendor across seven security and compliance dimensions in under two minutes, no email address required.
If you want a second set of eyes on where your organization stands, our team offers a free 30-minute compliance assessment of your current email environment against the proposed rule’s requirements.
Most healthcare organizations view email as a utility, a necessary tool for sending messages between staff, communicating with patients, sending out newsletters, connecting workflows, and so on. Historically, IT teams focused on keeping it running, security teams worried about phishing, and compliance teams made sure sensitive emails were encrypted.
Today, however, that view is rapidly becoming outdated.
Email has evolved into one of healthcare’s most critical digital infrastructure components, and also one of it’s biggest security threats. It’s a core channel for patient engagement, care coordination, revenue cycle operations, digital marketing, remote monitoring, and increasingly, AI-powered communications. The organizations that recognize this shift are building communications platforms designed for security, performance, automation, and growth. With the new HIPAA Security Rule requiring email encryption on the horizon, those companies that don’t may find themselves constrained by systems that were never intended to support modern healthcare.
Email Is No Longer Just a Messaging Tool
Healthcare organizations now depend on email to support dozens of mission-critical workflows every day.
Patients receive appointment reminders, registration instructions, imaging results, billing notifications, Explanation of Benefits (EOBs), prescription updates, preventive care reminders, patient education, and post-discharge follow-up. Marketing teams deliver personalized wellness campaigns and service line promotions. Clinical systems generate transactional notifications. Revenue cycle teams rely on secure digital communications to accelerate payments and reduce paper costs.
For many organizations, mission-critical patient communications flow through email every month.
When viewed collectively, email is more than a simple communications channel. It has become operational infrastructure with high levels of security needed and increasing compliance requirements.
The Stakes Continue to Rise
As healthcare becomes more digital, every communication carries greater business and clinical importance.
A delayed billing email may postpone payment. A failed appointment reminder can increase no-show rates. An undelivered care management message may impact patient outcomes. A misconfigured security policy can expose protected health information (PHI). Poor deliverability can undermine expensive patient engagement initiatives before they ever reach the inbox.
These are no longer isolated IT issues. Email can affect revenue, patient satisfaction, operational efficiency, compliance, and organizational reputation.
Today’s healthcare leaders require email infrastructure to provide the same reliability and visibility they demand from electronic health records, identity management systems, and other core infrastructure.
AI Is Raising the Bar Even Higher
There’s little doubt that artificial intelligence (AI) promises to transform patient communications.
Healthcare organizations everywhere are exploring AI-generated patient education, personalized outreach, intelligent scheduling, multilingual communications, and automated follow-up programs.
But AI also increases the importance of the underlying communications infrastructure.
Generating more personalized emails means little if organizations cannot:
Automatically protect PHI.
Apply consistent security policies.
Maintain complete audit trails.
Deliver messages reliably.
Integrate with EHRs, RCM and CRM platforms, and customer data platforms.
Demonstrate compliance during an audits.
In many ways, AI amplifies both the opportunities and the risks. Your email platform can help determine whether AI initiatives succeed or create new compliance and operational challenges.
Infrastructure Matters More Than Features
Healthcare buyers have traditionally evaluated email platforms based on individual features such as encryption, spam filtering, or secure portals.
Those capabilities remain important, but they no longer tell the whole story.
Today’s healthcare organizations should be evaluating communications platforms the same way they evaluate any mission-critical infrastructure.
Questions increasingly include:
Can it support both transactional and marketing communications?
Does it automatically enforce security policies without relying on user decisions?
Can it integrate with EHRs, CRM systems, CDPs, and business applications?
Will it scale during peak communication periods?
Does it provide detailed audit logging and reporting?
Can it adapt as regulatory expectations evolve?
Does it maintain high deliverability at enterprise scale?
Does it support single-tenant dedicated infrastructure for high performance and increased security?
These infrastructure characteristics often determine long-term success far more than any single feature comparison.
Email and the Future Of Secure Healthcare Communications
Healthcare is steadily moving toward a world where nearly every patient interaction is digital, personalized, and data-driven.
Healthcare leaders often ask whether they need a more secure email solution. That may be the wrong question.
The better question is whether their communications infrastructure is ready for where healthcare is headed over the next decade.
If you want talk about the future of your healthcare email infrastructure, reach out today and schedule a 30-minute assessment call with our experts.
Modern-day healthcare organizations rely on a growing array of partners and vendors to provide them with the tools they need to effectively serve patients and customers.
However, while new digital solutions and healthcare ecosystems often result in greater productivity and efficiency, they also increase the number of third parties a company must communicate with and share protected health information (PHI), requiring a business associate agreement (BAA). Unfortunately, this increases the risk of PHI being exposed, as it increases a healthcare organization’s supply chain network and the number of external organizations with access to their data, significantly raising the risk of a security breach.
This is where the concept of shared responsibility comes in.
In this article, we explore the shared responsibility model for data security, explaining the concept, the role of a BAA in shared responsibility, and why healthcare companies need to know how it works and where it factors into their HIPAA compliance efforts.
What Is The Shared Responsibility Model?
Shared responsibility is a core data security principle that divides the responsibility for protecting data between a company that collects the data and a vendor that supplies the infrastructure or systems used to process said data.
The shared responsibility model grew in prominence as more companies moved to cloud-based environments and applications. In the past, when companies kept their systems and data onsite, they had more control over who could access their data and, subsequently, a better ability to mitigate data security risks.
However, in adopting cloud-based infrastructure and applications, companies have to process and store their data in the cloud – often in shared infrastructure with other vendors using the same cloud – which consequently shifts some of the responsibility of information security to the cloud service provider (CSP) itself. This marked a profound shift in the way data was handled, transmitted, and stored – necessitating an evolved approach to data security.
This fundamental shift in the way companies consume infrastructure and use apps ushered in the shared responsibility model: Where the cloud vendor provides the infrastructure or application, including HIPAA compliant and high secure environments, but it’s still the responsibility of the client to configure and use it securely.
Business Associate Agreements (BAAs) and Shared Responsibility
By detailing the respective responsibilities of healthcare companies or Covered Entities (CEs) and their vendors or Business Associates (BAs) in securing PHI, a Business Associate Agreement is a prime example of shared responsibility.
For example, the Business Associate shoulders the responsibility of providing the data safeguards required by HIPAA to secure patient data, such as infrastructure, encryption, audit logging, and even physical onsite security.
The Covered Entity, meanwhile, is responsible for conducting risk assessments, defining access control policies and processes, configuring services accordingly, workforce training, and continuous monitoring.
Additionally, both parties have the obligation to report security incidents to each other, as well as being independently accountable to the U.S. Department of Health and Human Services (HHS).
Why Shared Responsibility Is Essential for HIPAA Compliance
For healthcare companies, having a firm grasp of the shared responsibility model for safeguarding and securing PHI, and how they fit within your overall security posture is essential (for two key reasons).
Security Gaps
Firstly, clearly understanding the shared responsibility decreases the likelihood of security gaps. If CEs are under the impression that the vendor handles all aspects of data security, they won’t be as vigilant. They’ll be less inclined to configure services, educate their staff accordingly, pay appropriate attention to vendor security alerts, etc.
But the same is also true for BAs: If they assume their client does most of the heavy lifting in securing the data disclosed to them, they could be remiss in their duties to protect it. Without shared responsibility, each side simply assumes the other is covering a safeguard, opening the door for security gaps that malicious actors can exploit.
Fortunately, by detailing both parties’ (CEs and BAs) responsibilities and liabilities regarding data protection, a BAA removes this ambiguity and, more importantly, reduces the risk of security gaps. It’s critical to know the details and work with vendors building products for compliance versus implementing a tick-box approach to compliance that places too much burden on the CE.
Covered Entities (CEs) Are Ultimately Accountable
Subsequently, the second reason why it’s essential for CEs to understand the shared responsibility model, and increase their cybersecurity readiness accordingly, is that it’s the CE that’s ultimately held accountable for data breaches.
Mistakenly thinking that a BAA automatically makes them compliant may result in healthcare companies underinvesting in training, monitoring, and incident response. Conversely, understanding that even with a BAA in place, they’re the ones primarily accountable for protecting PHI gives them a greater sense of urgency to properly implement HIPAA compliant security measures.
The Covered Entity’s Role Within Shared Responsibility
Let’s look at the ways that healthcare companies have to hold up their end in the shared responsibility model.
Choose Compliance-Conscious Vendors
First and foremost, companies have to choose the right vendors to supply them with HIPAA compliant services and solutions.
Look for companies that market themselves as HIPAA compliant and display a detailed understanding of HIPAA requirements, particularly the HIPAA Security Rule. Do your due diligence and perform deeper dives on potential vendors, researching their stated security features, reviews from existing clients, whether they have certifications like HITRUST – and if they’ve been involved in any data breaches.
Naturally, a core prerequisite of being a HIPAA compliant vendor is being willing to sign a BAA, so you can immediately rule out any vendors not willing to do so. For instance, some healthcare companies may assume they can use widely adopted solutions such as SendGrid, Mailchimp, but they don’t offer a BAA.
Once you’ve confirmed a vendor offers a BAA, look through it to establish its terms and determine if it covers the services you’re interested in.
Configuration
Another core component of shared responsibility is comprehensive configuration management. While the BA’s responsibility is to provide a secure solution that satisfies HIPAA requirements, it’s the CE’s responsibility to configure it securely to fit within their IT ecosystem.
Features that often require configuration include:
Access control: Role-based access, Zero Trust, Multi-Factor Authentication (MFA).
Feature restrictions: Disabling default configurations that enable integration with non-compliant tools.
Auditlogging: Enabling audit logging and configuring log formats.
Retention settings: How long to retain audit logs and who is permitted to review them.
Finally, establishing a patch management strategy, i.e., when and how your organization applies software updates, is an important element of configuration. While the vendor must release updates to fix security vulnerabilities discovered in their solutions, it’s up to healthcare companies to deploy the patches.
Training
Regardless of how many security features a vendor bakes into their solutions, once deployed by a healthcare company, the tool is only as secure as the practices of their least security-conscious employee. Consequently, companies must train their staff on how to properly use a solution to process protected health information and sensitive data. The more an employee is required to handle PHI, the more thorough and frequent their training should be.
Key aspects of comprehensive cybersecurity training include:
Common cyber threats: what the most prevalent cyber threats are and how to recognize them.
Incident response: how to report a suspected security incident, i.e., who to contact and when.
Specific solution training: how to securely use systems that process PHI
Scope awareness: knowing which services within your organization’s IT ecosystem are HIPAA-compliant and which are not
Reporting
Although both healthcare companies and BAs have notification obligations to the HHS in the event of a data breach involving PHI, it’s the CE that bears most of the investigative burden.
Firstly, while a BA may report a security incident, it’s the CE’s responsibility to conduct a risk assessment to determine the probability of compromise of PHI, assess risk, and determine whether an official notification of a breach to HHS is necessary.
Secondly, BAs must notify the CE without unreasonable delay and no later than 60 days after discovery. Although BAs often wait to complete internal investigations before notifying the CE, the CE’s 60-day clock starts upon the BA’s discovery, not upon the BA’s report. Therefore, BA delays can create compliance risks for the CE.
To prevent this, where possible, you can include stricter contractual reporting timelines in the BAAs. This constantly keeps your company in the loop, ensuring you have sufficient lead time to complete your own investigations and your HIPAA-regulated deadlines.
LuxSci – Secure Healthcare Communications
Developed specifically to fulfil the stringent regulatory and ever-evolving data security needs of the healthcare sector, LuxSci’s secure email, text, marketing and forms solutions help companies protect PHI and personalize communications.
Equally as importantly, instead of leaving you to “figure it out” – pushing additional responsibility back onto your company – LuxSci has a reputation for the best customer support in the business, offering onboarding, detailed documentation, secure default configurations, and ongoing support to help navigate the murky waters of HIPAA compliance, while getting best-in-class performance out of your solution.
HIPAA email software is communication technology designed to protect protected health information during electronic transmission while enabling healthcare organizations to communicate securely with patients, providers, and business partners. This software includes encryption capabilities, access controls, audit logging, and other security features required for HIPAA compliance when sending emails containing sensitive medical information. Healthcare providers, payers, and suppliers use HIPAA email software to maintain regulatory compliance while conducting routine business communications, patient outreach, and care coordination activities. Understanding what HIPAA email software offers helps organizations select appropriate solutions for their communication needs while avoiding costly privacy violations.
Security Features Required in HIPAA Email Software
HIPAA email software must include encryption capabilities that protect messages and attachments during transmission and storage. End-to-end encryption ensures that only authorized recipients can access message content, while encryption at rest protects stored emails from unauthorized access. Authentication mechanisms verify user identities before granting access to email systems, preventing unauthorized individuals from sending or receiving sensitive communications. Access controls allow administrators to define who can send emails to specific recipients and which types of information can be included in different message categories. Role-based permissions ensure that staff members can only access email functions appropriate to their job responsibilities. Automatic session timeouts prevent unauthorized access when users leave workstations unattended, while password complexity requirements help protect user accounts from compromise.
Audit and Logging Capabilities
Comprehensive audit logging tracks all email activities within HIPAA email software, creating detailed records of who sent messages, when they were transmitted, and who accessed them. These logs include information about message recipients, attachment details, and any forwarding or reply activities. Audit trails help organizations demonstrate compliance during regulatory reviews and investigate potential security incidents or privacy violations. Log retention policies ensure that audit information remains available for required periods, while secure storage prevents unauthorized modification or deletion of audit records. Automated reporting features can alert administrators to unusual email patterns or potential security concerns. Regular review of audit logs helps identify training needs and process improvements for email security practices.
HIPAA Email Software Integration with Healthcare Systems
HIPAA email software integrates with electronic health record systems, practice management platforms, and other healthcare applications to streamline communication workflows. These integrations allow users to send secure emails directly from patient records or billing systems without switching between multiple applications. Automated triggers can generate secure email notifications for appointment reminders, lab results, or billing communications. Application programming interfaces enable custom integrations with specialized healthcare software used by different types of organizations. Single sign-on capabilities allow users to access email functions using their existing healthcare system credentials. Integration features help reduce workflow disruptions while maintaining security standards across all communication channels.
Patient Portal and External Communication Features
Many HIPAA email software solutions include patient portal functionality that allows secure two-way communication between healthcare organizations and their patients. Patients can log into secure portals to read messages, respond to communications, and download documents without requiring special software installations. Portal notifications alert patients when new messages arrive while maintaining privacy protections. External communication features enable secure messaging with business partners, referring physicians, and other healthcare organizations that may use different email systems. Secure message delivery ensures that communications reach intended recipients even when they use non-HIPAA compliant email systems. Delivery confirmation and read receipts provide verification that important messages were received and accessed by recipients.
Compliance Management and Administrative Controls
HIPAA email software provides administrative tools for managing user accounts, setting security policies, and monitoring compliance across the organization. Centralized administration allows IT teams to configure security settings, manage user permissions, and enforce organizational email policies from a single interface. Policy templates help organizations implement standard security configurations that meet HIPAA requirements. User training modules within the software help staff understand proper email security practices and organizational policies for handling protected health information. Compliance dashboards provide real-time visibility into email security metrics and potential policy violations. Automated policy enforcement prevents users from sending emails that violate organizational security standards or regulatory requirements.
Implementation and Deployment Considerations
Healthcare organizations implementing HIPAA email software need to consider data migration from existing email systems, staff training requirements, and integration with current technology infrastructure. Planning phases should include security risk assessments, workflow analysis, and stakeholder input to ensure the selected solution meets organizational needs. Pilot deployments allow organizations to test functionality and identify potential issues before full implementation. Change management processes help staff adapt to new email security procedures and software interfaces. Technical support during implementation ensures that integration challenges are resolved quickly and that security configurations meet organizational requirements. Post-deployment monitoring verifies that the HIPAA email software performs as expected and continues meeting compliance obligations over time
Secure email is not the same as “email with encryption turned on.” True secure email requires enforced automated encryption, a signed BAA, access controls, audit logs, and documented processes — not just a feature toggle.
Standard email platforms like Gmail and Microsoft 365 rely on opportunistic TLS by default, which can silently fall back to unencrypted delivery if the recipient’s server doesn’t support encryption.
HIPAA’s encryption safe harbor means a misdirected but properly encrypted email is a non-event. The same email sent unencrypted is a presumed breach unless a risk assessment shows otherwise.
A signed Business Associate Agreement (BAA) with your email provider is non-negotiable — without one, you cannot legally send or store PHI through that provider.
The proposed 2025 HIPAA Security Rule update, planned for finalization in 2027, would make encryption of ePHI in transit and at rest a mandatory requirement rather than “addressable,” raising the stakes for organizations still relying on opportunistic TLS.
Best for: Healthcare IT Directors, Compliance Officers, Privacy Officers, and Marketing Managers at provider, payer, and supplier organizations that handle protected health information (PHI).
In healthcare IT, the term “secure email” gets thrown around loosely. Vendors slap the label on anything with a padlock icon, and internal teams often assume that because their provider offers TLS, they’re covered. They’re not, and the gap between what’s assumed and what’s actually required is where data breaches occur and HIPAA violations happen.
This guide breaks down exactly what secure email means from a technical and regulatory standpoint, why the email platform your staff uses every day probably isn’t compliant out of the box, and what to look for when evaluating a provider that needs to protect PHI at scale. If you want the full picture of what compliance requires beyond email specifically, our HIPAA Compliance Checklist is a useful companion read.
What Is Secure Email?
Secure email refers to an email system that protects the confidentiality, integrity, and availability of message content — specifically PHI — through a combination of technical safeguards and contractual protections. It’s not a single feature. It’s a stack of controls working together.
At minimum, secure email in a healthcare context includes:
Enforced encryption in transit, so messages can’t fall back to plaintext delivery
Encryption at rest, so stored messages remain protected on the server
Authentication protocols (SPF, DKIM, DMARC) that prevent spoofing and impersonation
Access controls and audit logs that track who accessed what, and when
A signed Business Associate Agreement (BAA) with the email provider
The distinction that trips up most organizations is this: encryption is a component of secure email, not the whole picture. A provider can offer encryption and still fail to meet HIPAA requirements if that encryption isn’t enforced, if there’s no BAA in place, or if audit logging doesn’t exist. Secure email is the combination of all these pieces functioning as a system, which is why it needs to be evaluated holistically rather than checked off feature by feature.
For healthcare provider, payer, and supplier organizations, this matters because email remains one of the highest-volume channels for PHI exposure, from clinical referrals to patient billing statements to routine staff communication. Getting the definition right is the first step toward closing the compliance gap.
Why Standard Email Is Not HIPAA-Compliant
Many healthcare organizations run on Gmail (Google Workspace) or Microsoft 365, and most assume they’re protected because encryption exists somewhere in the stack. That assumption is the single most common — and most dangerous — misconception in healthcare email security.
Here’s the problem: standard email services use opportunistic TLS by default. TLS is attempted between mail servers, but if the receiving server doesn’t support it, the message is delivered anyway — unencrypted, in plaintext. Neither the sender nor the recipient typically sees a warning. The email just goes through.
This isn’t a hypothetical edge case. IT professionals managing healthcare email infrastructure have flagged this exact issue directly: opportunistic TLS is often enabled by default and creates a false sense of security, since it offers no guarantee that a given message, including one containing PHI, won’t be transmitted in plaintext if the recipient’s mail server doesn’t support encryption. Organizations assume they’re protected simply because TLS is technically “on,” without realizing it isn’t enforced.
That gap has real consequences under HIPAA. The Security Rule currently treats transmission encryption as an “addressable” safeguard, meaning covered entities can, in theory, implement an equivalent alternative measure instead. In practice, regulators and auditors from the Office for Civil Rights (OCR) expect enforced encryption as the standard of care. “Addressable” has never meant optional — it means an organization needs a documented, defensible reason if it isn’t doing enforced encryption, and few reasons hold up under scrutiny. Finally, under OCR’s proposed changes to the HIPAA Security Rule for ePHI, scheduled for final publication in July 2027, email encryption moves from addressable to mandatory.
Beyond the encryption gap, standard consumer and even most business email plans typically lack:
A BAA that’s actually offered and signed (available on some enterprise tiers, but not automatic)
Audit logging sufficient to meet HIPAA Security Rule requirements
Built-in encryption at rest guarantees for stored messages
None of this means Gmail or Microsoft 365 are inherently insecure products. It means their default configuration is built for general business use, not for an environment where every misrouted or intercepted message carries breach notification liability. Making either platform HIPAA-appropriate requires layering on additional tools, policies, and critically, a provider relationship that includes a signed BAA covering the exact services in use.
The Technical Components of Secure Email
Secure email is built upon five technical layers. Understanding each one, and where it fails in standard email, clarifies exactly what a compliant solution needs to deliver.
Encryption in Transit (TLS)
Transport Layer Security (TLS) encrypts the connection between mail servers as a message travels from sender to recipient. There are two flavors, and the difference between them is the crux of most healthcare email compliance failures:
Opportunistic TLS attempts an encrypted connection but falls back to unencrypted delivery if the receiving server doesn’t support it. This is the default across most consumer and business email platforms.
Enforced TLS requires an encrypted connection for delivery to succeed. If encryption can’t be established, the message fails to send rather than going out in plaintext, or a link to secure portal can be sent to securely access the information.
HIPAA’s Security Rule lists encryption as addressable, but enforced TLS has become the de facto standard that auditors and OCR expect from covered entities and business associates handling PHI over email. As one healthcare IT professional put it while debating this exact tradeoff internally: the goal is to require TLS for all outbound email and then document the remaining controls around it, treating enforced TLS as the technical baseline, with policy and process built on top.
Encryption at Rest
Transit encryption only protects a message while it’s moving. Once it lands on a mail server — sender’s outbox, recipient’s inbox, backups, archives — it needs to remain encrypted in storage. This is encryption at rest, and it’s where many organizations underestimate their exposure.
Encryption in transit alone offers zero control over a message after it’s been delivered. If the destination server isn’t itself encrypting stored data, or if a backup snapshot is taken without encryption, PHI sitting in an inbox is exposed regardless of how securely it arrived. HIPAA’s Security Rule requires safeguards for ePHI both in transit and at rest, a compliant secure email provider needs to guarantee both, not just one.
End-to-End Encryption (S/MIME, PGP)
End-to-end encryption (E2EE) encrypts message content itself, not just the connection it travels over — meaning even the email provider can’t read the content. Two standards dominate here:
S/MIME uses certificate-based encryption and is common in enterprise environments, such as healthcare, particularly where organizations already manage a public key infrastructure.
PGP (Pretty Good Privacy) uses a public/private key model and is more common in technical or security-conscious communities, though it’s less frequently deployed at scale in healthcare due to key management complexity.
E2EE isn’t a baseline requirement for every PHI-containing email, enforced TLS plus encryption at rest satisfies most use cases. But it becomes necessary for especially sensitive communications, cross-organization data sharing where you don’t control the recipient’s infrastructure, or when a business associate agreement specifically requires it.
Authentication (SPF, DKIM, DMARC)
These three protocols work together to prevent domain spoofing and email impersonation, a growing attack vector against healthcare organizations specifically, given how often phishing campaigns impersonate providers, payers, or patients.
SPF (Sender Policy Framework) specifies which mail servers are authorized to send email on behalf of a domain.
DKIM (DomainKeys Identified Mail) adds a cryptographic signature verifying a message wasn’t altered in transit.
DMARC (Domain-based Message Authentication, Reporting & Conformance) tells receiving servers what to do when SPF or DKIM checks fail, and provides reporting visibility.
Without these configured correctly, an organization’s domain can be spoofed to send convincing phishing emails to patients or staff, creating a security failure that compounds the compliance risk of email interception.
Digital Signatures
Digital signatures verify sender identity and confirm a message hasn’t been tampered with between sending and receipt. Paired with encryption, they close the loop on message integrity, confirming not just that content was protected, but that it came from who it claims to have come from and arrived unaltered.
Standard Email vs. Secure Email: Feature Comparison
Feature
Standard Email
Secure Email (HIPAA-Compliant)
Encryption in Transit
Opportunistic TLS — attempted but not enforced
Enforced TLS — connection fails if encryption unavailable, can include delivery via secure portal option
Encryption at Rest
Not guaranteed; provider-dependent
Required — server-side encryption of stored messages
End-to-End Encryption
Not available
Supported via S/MIME and/or PGP
Digital Signatures
Not available
Included — verifies sender identity and message integrity
Authentication (SPF / DKIM / DMARC)
Optional, rarely enforced
Required — spoofing and impersonation protection
Business Associate Agreement (BAA)
Not provided on standard plans
Required — must be signed before sending PHI
Audit Logs
Basic or none
Full audit trail — required under HIPAA Security Rule
Access Controls
Basic password only
Role-based access, MFA, admin controls
Misdirected Email
Reportable HIPAA breach
Non-reportable if properly encrypted (safe harbor)
HIPAA Compliant by Default
No
Yes
What Makes Email HIPAA-Compliant Specifically
Technical safeguards alone don’t make email HIPAA-compliant. Compliance is a combination of technology, contracts, and documented processes — all four need to be in place simultaneously. This includes:
A signed BAA with your email provider – Any vendor that transmits, processes, or stores PHI on your behalf is a business associate under HIPAA, and business associates are legally required to sign a BAA before handling that data. Email providers have persistent access to ePHI — even end-to-end encrypted messages pass through their infrastructure at some point — which makes this requirement absolute, not situational. If a provider won’t sign a BAA, using them to send or store PHI isn’t a compliance risk you can mitigate; it’s a violation from the start.
Encryption as an addressable safeguard – Under 45 CFR §164.312(e)(2)(ii), the HIPAA Security Rule lists encryption of ePHI in transit as “addressable” rather than strictly “required.” In practice, this doesn’t mean optional, it means an organization must implement it, or document and justify an equivalent alternative safeguard. Enforced encryption has become the expected standard, and with the newly proposed HIPAA Security Rule planned for July 2027 publication, NPRM would formalize that expectation by making encryption of ePHI in transit and at rest mandatory rather than addressable. Organizations still relying on opportunistic TLS as their “equivalent alternative” should treat this as a closing window.
Access controls and audit logs – HIPAA requires the ability to track who accessed PHI, when, and what they did with it. This means role-based access permissions, multi-factor authentication, and a complete, retained audit trail — not just for compliance reporting, but for identifying and responding to incidents quickly.
The encryption safe harbor – This is one of the most consequential, and most underused, provisions in HIPAA. If PHI is sent via properly encrypted email and ends up misdirected to the wrong recipient, it is not a reportable breach under the Breach Notification Rule, because the encrypted content is considered unreadable and therefore not “unsecured PHI.” The exact same misdirection with unencrypted email is a reportable breach, triggering notification obligations to the individual and to HHS/OCR. Encryption isn’t just a security best practice here, it’s the line between a non-event and a formal breach investigation.
HITRUST certification as a trust signal – When evaluating vendors, HITRUST CSF certification is a strong external indicator that a provider’s security controls have been independently assessed against a recognized healthcare-specific framework. It’s not a HIPAA requirement in itself, but it meaningfully reduces the diligence burden on your side when vetting a provider.
Types of Healthcare Email That Must Be Secure
Not all internal debate here is about “should we secure email” — it’s about scope. Which specific email flows actually carry PHI, and therefore need to run through a compliant channel? In practice, the answer is broader than most teams initially assume.
The common thread: if a message references anything that could identify a patient in connection with health information — a name next to a diagnosis, an account number tied to a service date, an annual test reminder — it needs to move through a secure channel, regardless of whether it’s clinical, financial, or administrative in nature.
How to Evaluate a Secure Email Provider for Healthcare
Vendor evaluation in this category tends to go one of two ways: teams either take a provider’s “HIPAA-compliant” label at face value, or they get buried in RFP questions without knowing which answers actually matter. Ask these key questiosn to focus the evaluation on what’s operationally and legally significant.
“Does the provider sign a BAA? This is the first filter, not the last. If a vendor won’t sign a BAA — or offers a heavily limited one — everything else is irrelevant. Some organizations go a step further and negotiate indemnity or make-whole clauses into the BAA itself, seeking financial protection beyond the baseline liability allocation.
What encryption methods are supported? Confirm specifically whether the provider offers TLS only, or also supports S/MIME and/or PGP for end-to-end encryption where needed. TLS-only coverage is sufficient for most standard PHI communication; organizations with cross-border data sharing or especially sensitive use cases may need E2EE options available.
Is encryption enforced or opportunistic? This is the single most important technical question to ask directly, in those terms. A vendor that describes its encryption vaguely, without distinguishing enforced from opportunistic delivery, hasn’t answered the question. Push for specifics.
How are large attachments handled? Lab results, imaging files, and clinical documents often exceed standard attachment size limits. Confirm the provider has a secure, compliant method for large file transfer that doesn’t force users onto an unencrypted workaround.
What audit logging and reporting capabilities exist? You need visibility into delivery, access, and any failed encryption attempts, not just a generic sent/received log. Ask whether logs are retained for a period consistent with your organization’s HIPAA documentation requirements.
Do they support high-volume transactional email? Appointment reminders, billing notices, and patient communications at scale require infrastructure built for volume without sacrificing per-message compliance. Confirm the provider’s platform is built for this your specific pattern, not just person-to-person messaging.
Is the platform US-based with US data residency? For many healthcare organizations, where data physically resides — and under which jurisdiction — is a material factor in vendor risk assessment, particularly for payers and larger provider organizations with strict data governance policies.”
One operational factor worth weighing alongside these questions: secure email portals — the kind that require recipients to click through to a separate web page to read a message — solve the encryption problem but often create a real adoption problem. IT teams have reported a direct conflict between phishing-awareness training and portal-based workflows: staff and patients trained not to click suspicious links in emails are, understandably, reluctant to click the “secure link” a portal email contains. This is a legitimate reason many organizations increasingly prefer platforms that enforce encryption transparently in the background — like LuxSci’s SecureLine encryption technology — rather than routing every message through a separate portal experience.
Secure Email Checklist for Healthcare Organizations
Every safeguard covered in this guide comes down to a handful of concrete, verifiable actions. Use the checklist below as a working reference for what needs to be in place across your legal agreements, technical controls, and internal processes. This is not a one-time setup task, but something worth revisiting as your email volume, vendors, and regulations evolve. Share it across your compliance and IT teams as a starting point for an internal audit.
Legal and Contractual – BAA signed with email provider and all third-party vendors handling PHI.
Encryption – Forced TLS, not opportunistic only for emails in transit and all stored data encrypted with AES-256 bit encryption.
Access and Audit – Unique user IDs, role-based access, and login monitoring with advanced MFA enabled for all email accounts; audit logs active and maintained.
People and Processes – Staff trained in PHI handling, established breach response plan, annual email security policy review.
What Should I Do Now?
Secure email isn’t a single setting you switch on — it’s a combination of enforced encryption, a signed BAA, access controls, and documented process working together. Get any one piece wrong, and the rest doesn’t hold up under an OCR audit or a breach investigation.
If your organization is still relying on opportunistic TLS, an unsigned or incomplete BAA, or a patchwork of workarounds to move PHI through email, now is the time to close that gap, especially with the proposed 2025 HIPAA Security Rule update poised to make encryption a mandatory requirement rather than an addressable one in 2027.
Below are three ways you can continue your journey to securing your healthcare email:
Email can be HIPAA compliant, but only when the right safeguards are in place — enforced encryption, a signed BAA with your email provider, access controls, audit logs, and staff training on PHI handling. Standard email without these safeguards is not compliant.
2. Do I need to sign a BAA with my email provider?
Yes. Email providers have persistent access to ePHI — even encrypted messages pass through their servers — making them Business Associates under HIPAA. A signed BAA is required. If your provider won’t sign one, you cannot legally use them to send or store PHI.
3. What is the difference between opportunistic TLS and enforced TLS — and which does HIPAA require?
Opportunistic TLS attempts encryption but falls back to plaintext if the recipient’s server doesn’t support it. Enforced TLS stops delivery rather than sending unencrypted. HIPAA’s Security Rule treats transmission encryption as an addressable specification, in practice, enforced TLS is the standard auditors and OCR expect. The proposed 2025 HIPAA Security Rule NPRM would make encryption of ePHI in transit a mandatory requirement in 2027.
4. What happens if I send PHI in an unencrypted email?
It is an impermissible disclosure under HIPAA’s Privacy Rule and triggers the Breach Notification Rule, requiring you to notify the individual and HHS/OCR within 60 days. Penalties range from $100 to $50,000 per violation. Had the email been properly encrypted, the same incident would qualify for HIPAA’s encryption safe harbor, meaning no notification required.
5. Is Gmail or Microsoft 365 HIPAA compliant for sending patient emails?
Neither is compliant in their default configuration. Both use opportunistic TLS, meaning PHI can be sent in plaintext if the recipient’s server doesn’t support encryption. A signed BAA is available on enterprise plans but doesn’t close the technical gap alone. A purpose-built HIPAA-compliant email platform is the reliable solution.
HIPAA email laws are federal privacy and security regulations that govern how healthcare organizations handle Protected Health Information (PHI) in electronic communications. The HIPAA Privacy Rule and Security Rule establish requirements for protecting patient information when transmitted via email, including encryption standards, access controls, and audit procedures. Healthcare organizations must implement appropriate safeguards to prevent unauthorized disclosure of patient information through email communications while maintaining compliance with federal regulations. Email communication in healthcare requires careful attention to privacy laws that protect patient confidentiality. Understanding HIPAA email laws helps healthcare organizations communicate effectively while avoiding violations and penalties.
How Do HIPAA Email Laws Protect Patient Information?
Patient information receives protection through strict limitations on email usage and disclosure requirements under federal privacy regulations. Healthcare organizations cannot freely share patient data via email without implementing security measures that prevent unauthorized access or interception. HIPAA email laws require covered entities to assess risks associated with email communications and implement safeguards appropriate to their operational environment. Encryption requirements form a cornerstone of email protection under HIPAA regulations, though the Security Rule treats encryption as an addressable specification rather than a mandatory requirement. Organizations must evaluate whether encryption is reasonable and appropriate for their email communications containing patient information.
Most healthcare organizations implement email encryption to protect against data breaches and demonstrate compliance with federal security standards. Access control provisions limit who can send, receive, or access emails containing patient information within healthcare organizations. Staff members need unique user credentials and role-based permissions that restrict email access to information necessary for their job functions. Automatic logoff features prevent unauthorized access when devices are left unattended. Audit requirements mandate that healthcare organizations monitor and log email system activity to track potential security incidents or privacy violations. HIPAA email laws require documentation of who accessed patient information, when access occurred, and what actions were performed. Organizations must maintain these audit logs and review them for suspicious activity or compliance gaps.
What Email Practices Violate HIPAA Laws?
Sending unencrypted emails containing patient information to external recipients violates HIPAA security standards in most circumstances. Healthcare organizations cannot email lab results, treatment summaries, or other PHI to patients using standard email without encryption protection. External communications require additional security measures to prevent unauthorized interception during transmission. Using personal email accounts for work-related patient communications creates multiple compliance violations under HIPAA regulations. Healthcare workers cannot forward patient information to personal Gmail, Yahoo, or other consumer email accounts that lack appropriate security controls. Personal email usage also creates challenges for audit logging and organizational oversight of patient information handling.
Sharing patient information with unauthorized recipients through email represents a serious privacy violation that can result in substantial penalties. Staff members cannot email patient details to family members, colleagues outside the care team, or external parties without proper authorization. Accidental disclosure through incorrect email addresses or reply-all mistakes can also constitute HIPAA violations. Inadequate access controls that allow broad email system access violate HIPAA requirements for limiting PHI exposure to minimum necessary levels. Organizations cannot provide all staff members with access to patient email communications regardless of their job responsibilities. Role-based restrictions must limit email access to information required for specific work functions.
How Can Healthcare Organizations Comply With HIPAA Email Laws?
Risk assessment procedures help healthcare organizations evaluate their email systems and identify compliance gaps that need attention. Organizations examine current email practices, security controls, and staff training to determine where improvements are needed. The assessment process guides development of policies and procedures that address specific risks identified within the organization’s email environment. Staff education programs ensure that healthcare workers understand their responsibilities under HIPAA email laws and know how to handle patient information appropriately. Training covers email security best practices, encryption requirements, and procedures for reporting potential violations.
Healthcare organizations need ongoing education to keep staff current with evolving regulations and technology changes. Technology implementation supports compliance through automated security features that protect patient information without requiring constant user intervention. Healthcare organizations can deploy email encryption systems, data loss prevention tools, and access management platforms that enforce HIPAA email laws. Automated systems reduce reliance on staff compliance and provide consistent protection for patient communications. Policy enforcement mechanisms ensure that HIPAA email laws are followed consistently across healthcare organizations. Clear policies define acceptable email practices, specify security requirements, and outline consequences for violations. Organizations need monitoring procedures to verify policy compliance and corrective action processes to address violations when they occur.
