Add custom header filtering for rules
I would like the ability to create rules on custom headers like Mail.app. Specifically, I want to filter on X-Original-From
It's really surprising that you can't have auto filters applied to incoming mail (I.e., from a particular person, label xx and archive).
Chris Inacio commented
I would like "X-Spam" and "Reply-To". But flexible headers like Mail.App is the preferable solution.
David Coppit commented
I also want to filter on X-Priority, and some custom X-foo headers used at my work.