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Posts Tagged ‘deliverability’

Why You Should Separate Your Transactional and Your Marketing Email Sending

Tuesday, March 4th, 2025

A typical healthcare organization sends at least two distinct classes of email messages: business or transactional emails and marketing emails.

Transactonal email consists of all of the individual, personal messages sent by sales, support, billing and other departments to specific people. These messages are generally more time sensitive and it is very important that the recipients actually receive them. These messages should not be delayed by any kind of spam filtering software, if possible.

Marketing emails are messages sent in bulk to many people at once. Examples of marketing messages include company newsletters, new product offers, promotions and ads, status notices, etc. You will need HIPAA compliant email marketing for this if you are marketing into the healthcare market

Separating your transactional and marketing emails can help ensure they are reliably delivered. Using different email servers and maybe even a unique domain name can improve your email deliverability. This post will look at why.

 

Separate Transactional and Marketing Email to Improve Deliverability

Successful marketing includes building your brand reputation in the eyes of your current and would-be customers or patients. However, by its very nature, sending marketing email can damage the reputation of your email address, domain, and email servers. It doesn’t have to, but it can … and it can happen in unexpected ways.

Spam Complaints

  1. The larger your marketing mailing list is, the more people are on it who do not really want your email. This is a fact of email marketing, even if you abide by the CAN-SPAM Act and have an “opt-in” list.
  2. The more often you send email to your mailing lists, the more often these people will be annoyed by your email messages.
  3. Some of these annoyed people will complain that your email is “spam,” instead of using the unsubscribe link. This is because they are either too lazy to opt-out, annoyed by the message, don’t believe the opt-opt will work, or never even bothered to look to see if they could opt-out.

This all contributes to the generation of spam complaints. Receiving many spam complaints can cause email servers to start blocking your emails. This can be based on either your email content, your sending email address, or your sending email server IP address.

It is best to keep your complaint rate to a minimum by monitoring your complaint feed back loops, opting out anyone who complains and maintaining active mailing lists that contain only opted-in parties.

Spam Content

By its very nature, the types of email that fall into the bulk email marketing category share many common characteristics. Email filtering software is sophisticated and can often tell the difference between a marketing message and a business message. Sending many messages with spam-like qualities to a recipient server can result in your email being delayed, filtered, or blocked.

Spam-like content detection can be something as simple as the text of the required section of your email that indicates how to “opt-out.” Many legitimate messages can be classified as spam-like simply due to the nature of pattern recognition.

Email Delivery Throughput

Transactional email messages are classified as “transactional.” They are unique messages usually sent throughout the day to individuals. Marketing email messages are called “bulk” emails, meaning the same message is sent in large batches to multiple recipients in short time frames.

The sending of marketing messages can place a significant burden on your outbound email sending servers. Sending many messages within a short time frame can degrade performance and cause your business email to be delivered much more slowly if they are sharing the same outbound service.

Many marketing emails cannot be immediately delivered to the recipients and are placed in a queue to retry over time. For large marketing email lists (and especially in cases where your sending server is getting blacklisted) this can result in large email queues which slow down the delivery of both business and marketing email if sent from the same server.

Blacklisting

An all-too-common side effect of marketing email is having the sending email server blacklisted. When your server is blacklisted, by say yahoo.com, then all email to recipients at that domain will fail to be delivered. If you are sending transactional email through the same server as your marketing email then your transactional email to these same folks will also fail. This is the most critical reason why you should use separate servers for transactional and marketing email.

But how could you get blacklisted?

  • If your mailing lists have bad email addresses on them. E.g. non-opt in, purchased, spam trap, spidered, or other addresses that you should never email.
  • If your mailing addresses have lots of invalid email addresses on them. E.g. the list is very old and includes defunct addresses.
  • Your email content is frequently flagged as spam-like.

It is true that the larger your list and the more you send, the more likely you are to get blacklisted, unless you are careful about managing your subscriber base.

Shared Email Services

If you share outbound email servers with other customers of your provider, then your sending can be impacted by their behavior. If they are sending spam and get the server blacklisted, then that affects your emails as well. The only thing that protects you in these cases is the policies of your email provider. Better yet, use a dedicated server from LuxSci and don’t share your email servers with anyone else.

Recommendations for Successful Emailing

In order to reliably deliver your business and marketing emails, we recommend:

  1. Using a different domain name in the “From” and “Reply” email address for your transactional and marketing emails.  E.g. info@widget-wiz.net for your marketing email and info@widget-wiz.com for your business (e.g. sales) email. These can go back to the same person and same INBOX, but having different domains allows blocks on your marketing domain to not affect your business domain.
  2. Using good deliverability tactics and best practices for your marketing email messages.
  3. Sending your marketing email messages through email servers separate from your business email so that black lists and throughput issues do not affect your business email.
  4. Ensuring that your email provider has good policies and controls in place so that other customers do not affect your email’s deliverability.
LuxSci customers:
  • Can benefit from dedicated email server infrastructure that sends fully HIPAA compliant email
  • Can use separate High Volume accounts for bulk email. These are sent from separate servers from our business email accounts and are designed for processing mass emails.

Want to learn more, contact us today!

Email List Hygiene: 5 Best Practices for Cleaning Up Email Lists

Tuesday, August 2nd, 2022

When sending emails from a new server and IP address, we always stress the importance of warming up the server to prevent emails from being flagged as spam. One critical step of the warm up is sending small batches of messages to email contacts that are likely to open and click on the content. Sending to clean email lists helps build a positive IP reputation and will improve email deliverability over time. This article explains the basics of email list hygiene and how to clean up email lists.

email list hygiene

What is Email List Hygiene?

Email list hygiene involves removing ineligible contacts from lists and adding new addresses with proper permissions and consent. Good email list hygiene contributes to good email deliverability and engagement. It also prevents emails from being marked as spam because all recipients have agreed to receive email communications. Here are our tips for cleaning up email lists:

How to Clean up Old Email Lists

1.     Remove Role Accounts

We don’t recommend sending emails to addresses that are groups or aliases that support a specific business function. These include addresses like:

Spammers often scrape these addresses off websites and send them unsolicited emails. To successfully warm up a new IP, it is essential to differentiate sending patterns from spammers as much as possible.

2.     Remove Inactive or Incorrect Email Addresses

Most mailing lists contain old email addresses that are no longer active. Removing these addresses before warming up a new mail server is essential. Spammers often purchase lists that contain a high proportion of inactive emails. Sending to many inactive addresses may cause the server to be flagged as spam. Also, check for and correct common misspellings and typos, for example, “gamil.com” vs. “gmail.com.”

If working with a large email list that hasn’t been contacted in a while, it may be worthwhile to use a paid tool to run these verification checks and remove bad email addresses.

3.     Review Email Permissions

Before sending a campaign, review how the email list was collected. Sending unsolicited emails is an excellent way to be marked as spam. If marketing communications are planned, ensure the contacts have explicitly agreed to receive marketing messages. The CAN-SPAM Act regulates how marketers can use email to communicate with prospects. It’s essential to confirm that the list was not collected in a way that violates those terms. In addition, never send to a list purchased from a third party, as that violates the CAN-SPAM Act and can lead to massive financial penalties.

Sometimes, the origins of an email list may be unknown. In this case, running an opt-in or re-engagement campaign is a good idea. This gives users the opportunity to resubscribe to the mailing list and reengage with the brand. Only sending emails to people who have opted in increases the likelihood they will engage with future emails. Remove contacts from the list who do not respond or opt-out from future communications.

Ongoing Email List Hygiene

Setting up a schedule to maintain email list hygiene is crucial to preserving IP reputation. It takes ongoing work to support list hygiene. Including email list cleaning tasks in campaign set-up and performance reviews is essential to ensure campaigns are delivered to the recipients.

4.     Remove Bounces, Spam, and Unsubscribes

After every campaign, remove addresses that have unsubscribed or bounced. Most email marketing tools will automatically remove unsubscribes but reviewing the feedback is essential. If many people unsubscribe even after list clean-up, review the email contents to ensure they are relevant and not spammy.

Likewise, even verified subscribers may report emails as spam instead of clicking on an unsubscribe link. We recommend removing contacts who have marked emails as spam because it is a clear indicator that they no longer want to receive these types of emails.

Continuing to email users who have unsubscribed is a CAN-SPAM violation with penalties in the thousands of dollars. Bounces are not usually removed automatically by email programs. Marketers should review the list of bounced emails after every campaign is sent and remove bounced addresses to keep the list clean. Lists acquired from spammers often contain many email addresses that will bounce, so avoiding sending to bounced addresses is recommended.

5.     Set Up Double Opt-In for New Subscribers

Even if the original list was not collected according to best practices, setting up validation procedures for new subscribers can help ensure that only people who want to receive emails will get them.

The best way to validate email subscribers is by setting up a double opt-in process. By “double opt-in,” we mean that when someone signs up for an email list, they are sent another email requiring them to confirm the subscription by clicking on a link before being added to a list. This helps ensure that only people who want to receive brand communications will be added to the lists.

Conclusion

Cleaning up email lists can initially be time-consuming. Setting up the proper procedures and reviewing existing lists regularly can help maintain proper list hygiene and improve email deliverability.

Send Fast, Send More – High Volume Bulk Email Server Clusters

Wednesday, June 8th, 2022

LuxSci’s Secure High Volume bulk emailing service provides excellent deliverability for HIPAA-compliant mass mailings, including newsletters, appointment reminders, and other types of transactional emails. Using email server clusters is an effective way to send high volumes of email in a scalable manner.

It is often the case that customers require either:

  • Sending to large numbers of recipients (millions to tens of millions or more in a month)
  • Sending many messages quickly (in short bursts)

In either case, the mail server needs to handle large numbers of concurrent connections and process large mail queues quickly.

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High Volume Bulk Email: Key Ingredients for Good Deliverability

Tuesday, August 3rd, 2021

How do you ensure your bulk emails have good deliverability?

Deliverability is key to anyone sending bulk emails like newsletters, announcements, or triggered notifications. As a provider of secure bulk email services, we constantly advise customers on how they can avoid having legitimate messages marked as spam and ensure that they are not blacklisted. In this article, we consolidate our advice for everyone’s benefit. Some tactics for good bulk email deliverability include: ensuring you have a good mailing list, maintaining your mailing list, email message content, and reputation management techniques like SPF, DKIM, and IP anonymization.

bulk email deliverability

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8 Factors That Influence IP Reputation and Email Deliverability

Tuesday, May 25th, 2021

Getting your email marketing messages into your recipient’s inboxes is key to a successful mailing campaign. This is “deliverability.” One of the central factors governing the deliverability of your messages is the reputation of the Internet Protocol (IP) Address of your sending email server — its “IP reputation.”

This article explains some of the most common factors that affect your server’s IP reputation and email deliverability. Having a good IP reputation will help ensure your marketing messages are reaching your recipients.

Before diving in, check to see if you are on any common blacklists using mx toolbox.

ip reputation and email deliverability

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