IMAP problem for "Gmail" account

I assume “Retry” does not fail (otherwise it could be used for additional information). It sounds like a server bug, but the only way to be sure is to get a connection log. If it happens often then you can run MailMate with the Activity Viewer (⌥⌘0) open. After the error, you can then locate the related connection and copy/paste (relevant part of) the log to this ticket.

Thanks in advance.

I am having this problem. Retry fails in my case. When I looked at the activity monitor, I got what is below. There were lots of fetch requests above this...

20:03:02 S: * 30865 FETCH (UID 200422 FLAGS (\Seen))
20:03:03 S: K9 OK FETCH completed.
20:03:03 Deleting messages
20:03:03 C: K10 UID STORE 39085:39364 +FLAGS.SILENT (\Deleted)
20:03:03 S: K10 OK STORE completed.
20:03:03 C: K11 UID EXPUNGE 39085:39364
20:03:07 S: * 30765 EXISTS
20:03:07 Error: An EXISTS response decreased the number of messages. This should never happen.
20:03:07 Error code: 1
20:03:07 Failed action (1010). Reset observed read/write timeouts: 8/8

20:03:07 Handling reply
20:03:23 Terminating non-running connection...

@Charles: Seems like it is a server bug. What server is this?

Also, try generating logs for me like this:

• Open the Activity Viewer (⌥⌘0).
• Relaunch MailMate.
• Wait until you have seen the error at least once.
• Use “Help ▸ Send Server Logs”.

Then I'll see what I can find.

This probably is server side. I left my mail client open at work (Outlook for Mac 2016), so two programs were accessing the mail at the same time. I closed it and that seems to have fixed the problem. If it re-appears, I'll post logs.

Please let me know if you want me to check whether it re-appears (by opening Outlook 2016) in order to get logs.