Hello, we want to talk with any organization that has dealt with the issue of sending encrypted emails from their outbound platform (we leverage Zix on our Office 365 instance) that can be decrypted by Salesforce for purposes such as email-to-case functionality.

We understand the point-to-point TLS connection and we have implemented Shield, but for our standards we must be able to encrypt the message, not just secure the channel, then have Salesforce decrypt and route that message accordingly.