[EMAIL PROTECTED] writes: > > Having the ability to create a header like "X-Project:" would be > nice. Then I could easily filter messages for given projects, > without having to is subject lines, which clutters things. > > Change the current dropdown with To, CC, BCC and such to: > 1- include the userdefined header that filtering uses > 2- have the option to add a new header to the list like the filter does.
A trivial version of this feature has worked in the past. See <http://bugzilla.mozilla.org/show_bug.cgi?id=16925>. Dan
