In no particular order: What does "expunge" do - as near as I can tell, no matter how I've tried to use it, it's a totally useless button. . . Sometimes after email has been received in K9, and then deleted from the server by my computer email client, K9 will remove the email from the K9 inbox like it should BUT it will still display a message count as if the message(s) are still there. In other words, the mail box might be empty, but K9 will indicate that there are messages in the inbox. How do you "clear" this message count, short of simply deleting the account and re-entering it again?? How do you move messages to another folder? I see the option to do so, but don't understand how to make it work? Too bad there isn't any documentation. . .