What are the requirements for delivering encrypted messages over TLS.

Modified on Wed, 9 Sep, 2020 at 11:17 AM

If TLS is configured as a secure delivery method for your domain configuration.  An email can be encrypted and delivered to the recipient using TLS v.1.2 or TLS v.1.3


In order for an encrypted message to be delivered over TLS, the recipient's inbound e-mail server must "advertise" that it supports TLS and must use a digital certificate signed by a certificate authority (CA). 


If the preferred delivery method for an encrypted message is TLS and we are unable to deliver the message over TLS, then another secure delivery method will be used to encrypt the message.  


(We do not support sending encrypted messages over TLS versions lower than 1.2 because they are less secure versions of TLS and in some cases does not meet regulatory encryption requirements).





Was this article helpful?

That’s Great!

Thank you for your feedback

Sorry! We couldn't be helpful

Thank you for your feedback

Let us know how can we improve this article!

Select at least one of the reasons
CAPTCHA verification is required.

Feedback sent

We appreciate your effort and will try to fix the article