IMAP synchronization question

Jonathan Protzenko jonathan.protzenko at
Thu Aug 22 11:32:04 UTC 2013

That seems to have fixed the problem, yes. Thanks much!


On Sat 17 Aug 2013 06:51:02 PM CEST, Andrew Sutherland wrote:
> gmail recently turned on CONDSTORE support a few months ago for
> everyone, rolling it out over time. This may have changed how
> Thunderbird synchronizes gmail significantly.  There is a UseCondStore
> pref set on the incoming server.  You can try turning it off and see
> if things go back to the way they used to work.
> Ah, he were go after some googling, bienvenu says on
> ===
> gmail recently added support for condstore. You could try telling
> thunderbird not to use condstore (it's a hidden pref, setting
> mail.server.default.use_condstore to false will turn it off for all
> servers). The partialuidfetch is done when we use condstore, so if
> turning off the use of condstore fixes the issue, that would be
> evidence that the partialuidfetch is involved.
> ===
> Andrew
> On 08/17/2013 05:43 AM, Jonathan Protzenko wrote:
>> Hi,
>> I've encountered a weird behavior that I managed to tame some years ago
>> using a combination of hidden prefs, but that I can't seem to fix now.
>> The problem could be summed up as "Thunderbird figures out there are
>> new messages in my IMAP folders but does not download them".
>> In more detail:
>> - the folder pane tells me there are 10 new mails in my "tb-planning"
>> folder,
>> - I click on the said folder, and then the 10 mails do _not_ appear,
>> - Thunderbird works for quite some time (connecting to server, opening
>> folder tb-planning, downloading new messages...),
>> - finally, the messages arrive.
>> The frustrating thing is that if I go offline, and ask Thunderbird to
>> download messages, it will aggressively fetch messages from other
>> folders.
>> Am I missing something or is it just the expected behavior?
>> Thanks,
>> jonathan
>> PS: this is a Gmail account, so it may be a case of "Gmail does not
>> support imap extension X"
>> PPS: I just checked: I'm subscribed to all folders, the faulty folder
>> is selected for offline use, and I do have the hidden pref
>> mail.server.default.check_all_folders_for_new set to true!
>> _______________________________________________
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>> tb-planning at
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