It's probably due to synchronization errors, but it's difficult to tell why without a log.
Can you enable debug logging in the settings, then retry, wait a few moments and then check the K9mail-errors folder and provide the 'email' contents if there is one. On Monday, 28 March 2016 16:46:08 UTC+1, Tommaso Sofi wrote: > > Hi, first of all thank you for this beautiful client. I use k9 for many > years and I never had issues, but I have a problem since last week: I have > 5 imap accounts configured, 2 of them are Gmail accounts and in one of them > I'm no more able to change the read/unread status. If I read the mail, of i > mark it as read, suddenly it is marked so, but if I resync the client it > come back to previous status. Checking on Gmail web page, looks like the > read/unread edits never arrived to the server. The strange thing is that > another google account is working perfectly. I hope you can help me. Thank > you > -- -- You received this message because you are subscribed to the K-9 Mail Users List. To post to this group, send email to [email protected] To unsubscribe, email [email protected] To report an issue with K-9 Mail, visit http://code.google.com/p/k9mail/issues/list For more options, visit this group at http://groups.google.com/group/k-9-mail --- You received this message because you are subscribed to the Google Groups "K-9 Mail" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
