IMAP synchronization question

Mike Conley mconley at
Thu Aug 22 13:42:38 UTC 2013

Just out of curiosity - is this the sort of fix that we'll need to roll 
out to all of our users?


On 22/08/2013 7:32 AM, Jonathan Protzenko wrote:
> That seems to have fixed the problem, yes. Thanks much!
> j.
> 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 mailing list
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