Filter by categories, address book lists, groups

Mail filters could support "group" as selectable. This would mean that I could filter mails from certain people belonging to a named group in my address book in the same folder. This gets useful e.g. if different people are talking about similar subjects but without using a mailing-list. It would also make setting filters much easier instead of defining a new filter for every person/subject/whatsoever by just tearing the person into the address book group. Think of special folders for collecting all kind of invioces into one folder, newsletters or mails from your financial institutes, others for everything related to your career (applications and such) and yet others for all friends. So when a sender is contained in one of those groups all mails by him go to the defined folder.

Moved from SF:
​https://sourceforge.net/tracker/?func=detail&aid=2910737&group_id=13560&atid=363560