Feature: Tagging Mails/changing headlines

[funktionierbar]

Hi,

I installed gray-duck-mail on my VPS in search for aprovider for small mailing lists, of which there arent many. It does the job nicely, one of the things that irritated me, was that I was not able to change the part that is added to each subject line. "message from list@example.com" is really long and makes my inboxes kind of confusing.
A feature would be nice where I could change the part that is added to the subject line, maybe a [tag], like most mailinglist programs do.

thanks for your great work!

[wagesj45]

I like this idea. I think I'll leave the current as the default, and allow the admin to add a custom string (or no string) to the beginning to denote a mailing list.