Is it possible to add a "sent from outside secure addresses" or another text.. warning in the header of emails sent from domains other than certain domains?
Thank you
Motivation
If this feature is not available (I couldn't find it), I think it would add more value both in terms of security and a new feature to Mailcow features.
Summary
Hello,
Is it possible to add a "sent from outside secure addresses" or another text.. warning in the header of emails sent from domains other than certain domains?
Thank you
Motivation
If this feature is not available (I couldn't find it), I think it would add more value both in terms of security and a new feature to Mailcow features.
Additional context
No response