Not ready for prime time...
Moving things is not reliable. Often when the app is reopened things are back when they should have been filed. Oh, and gosh forbid you undo moving a thread...
Ill stick with Mail until there is something better...
Should also mention that interactions with support mostly resulted in "no error on our end" responses. Sorry devs, I really would not waste my time reporting things unless I wanted to help improve your app by reporting real issues. But apparently you know everything and my feedback is not welcome.
Hbax450 about
Airmail - Your Mail With You, v1.1