BCC all outgoing mail from one local mailbox to the other one in the same domain
Thank you for your input! We will consider this functionality in upcoming releases if it will be popular.
Everyone, please continue voting for this feature if you consider it important.
And it would be nice to have "auto CC"
There is also the declined feature here https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/35380816-allow-configuration-maybe-via-postfix-to-bcc-all
+1 here too!
+1 For mail groups without sharing the same mailbox
Max Korzhanoff commented
For Mail Archiving / Compliance / Security purposes