When accessing my Gmail account with Thunderbird, using IMAP, the progress has become glacially slow. It sometimes takes minutes between steps (sending login information,… (read more)
When accessing my Gmail account with Thunderbird, using IMAP, the progress has become glacially slow. It sometimes takes minutes between steps (sending login information, opening folder, downloading messages) with the whirling blue circle going the whole time. Sending mail goes quickly but the program often times out trying to copy the sent mail to Gmail's sent mail folder. When I access Gmail with a browser I often find extra emails in both folders (and in the "all mail" folder) that I deleted in Thunderbird but the delete command apparently didn't make it to Gmail.
I've tried rebuilding the mailboxes by right-clicking on the mailbox, selecting "properties" and "repair folder." When I do this to all the Gmail folders, this sometimes speeds up the communication, but not always, and never for very long. The problem always returns within a few hours.
I've tried deleting the MSF files from my profile, to no avail.
I've tried restarting with add-ons disabled, to no avail.
I've compacted all my Gmail folders, to no avail.
I've disabled anti-virus checking of the Thunderbird profile folder, to no avail.
This is happening with two different instances of Thunderbird on two different platforms (one Mac, one Windows), and both copies of Thunderbird do IMAP just fine with a non-Gmail account, so I think it's unlikely that this is a problem on my end. Has Google changed something about their IMAP protocol recently? I've been having this problem for about two weeks now. At first it was restricted to the copying of sent emails into Gmail's "sent mail" folder, but in the last five or six days it has been slow with nearly every operation.
The mailboxes in question are nearly empty. I keep them trimmed to fewer than 100 emails in "all mail" and less than 30 in the inbox.
This is the same email account that I've been accessing with Thunderbird for years, and as far as I know I didn't change anything on my end. I didn't install any new software and made no changes to the settings. Things just gradually slowed down until now they're painfully slow.
Any suggestions will be much appreciated. Especially from someone who has already faced and solved this problem!