I'm using Gnus with offlineimap to connect to an IMAP server. I'm having issues with the tick mark ("!"). I can mark messages o.k. and when I come back they're still marked. The problem is, when I try to "untick" them (via the "@" key) they still come back marked when I come back to the group on a restart. Interestingly:
I wouldn't think this should have anything to do with offlineimap because I get the same behaviour even if it isn't running. Anyone know what I'm doing wrong? (I'm a newbie to Gnus, for whatever it's worth!)
By hitting '@' you are toggling the mark for the gnus-agent, indicating you want to download the article. Based on the setup you describe, this is not what you want to do. You can use 'd' mark-as-read to indicate that the article is read. Reading the section Marking Articles in the Summary Buffer section of the gnus info pages may help clarify.