So i just purchased the app. Needed help setting up rules and also setting up so that was a particular group @microsoft/@google/etc. would go into their specific folders. Chatted with Sherlyn from AirMail and support was fast and very easy. I didn’t want to spend all day inputting rules for each person in a group (first.last)@microsoft.com, all that needed to be done was to add @microsoft and specify which folder these will fall into. This app does look a lot nicer than Apple Mail.
GDT3 about Airmail - Lightning Fast Email