PGP Encrypted Marketing Cloud e-mails

Question

Can the Marketing Cloud send PGP encrypted e-mails?

This is a fairly short question but I couldn't find anything precise on the topic, either in documentation or via Google. The documentation only mentions "... digitally sign messages ..." on the Key Management page.

Thanks for your support!

Answer 1

After consultation with a very senior Solution Engineer I found my answer, which I will provide with two parts to the answer for better understanding and documentation for future searches around this:

1. No, PGP encryption of e-mails doesn't work (or likely any other means). It's kind of plausible because this would have a massive impact on the sending infrastructure. It's likely to rare a use case to bother with development at this sort of scale. Totally understandable to be honest ...
2. "Digitally Sign Messages" in the documentation refers to S/MIME, which allows to sign messages with a digital certificate that ensures the sender is correct and the message is not tampered with. From what I understand this is basically another layer on top of DMARC for increased trust.

I was warned though, that the S/MIME feature is a very old one and there is no guaranteee that it still has full support on all the various send methods now available.