Developer forum

+1

Dynamicweb does not have a built in support.

As far as I remember, .net smtp client have a vague (if any) support for this and it requires external libraries to correctly sign the mail message.

But by using sendgrid, you get it out of the box: https://sendgrid.com/docs/glossary/dkim/

If anyone have some code without external libraries, I would love to see it - we can consider it.

Thanks, Nicolai