Today I discovered the "Mark all as read" function in K9. I was not very happy to find out, that it marks all mail in my inbox as read even the ones currently not shown on the screen.
Naturally now all my mails in the imap folder are marked as read. Is there any way to undo this? I hit the button not by intention...
P.S. How can anybody wish a shortcut for this feature? :P
And there's no way to undo it, sorry.
– Philip Whitehouse Oct 18 '16 at 14:34