SMTP TLS (Transport Layer Security) is the mechanism by which two email servers, when communicating, can automatically negotiate an encrypted channel between them so that the emails transmitted are secured from eavesdroppers.

It is becoming ever more important to use a company that supports TLS for email transmission as more and more banks, health care, and other organizations who have any kind of security policy are requiring their vendors and clients to use this type of encryption for emailed communications with them. Additionally, if your email provider supports TLS for email transmission, and you are communicating with people whose providers do also, then you can be sure that all of the email traffic between you and them will be encrypted.

How do you find out if someone to whom you are sending email uses a provider who’s servers support TLS-encrypted communications? We will take you through the whole process step-by-step, but first let us note some important truths about TLS connection encryption.

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