[MlMt] Odd behavior when deleting and recreating an account

Steven M. Bellovin smb at cs.columbia.edu
Sat Dec 23 14:49:42 EST 2017

On 23 Dec 2017, at 5:09, Benny Kjær Nielsen wrote:

> On 21 Dec 2017, at 23:48, Steven M. Bellovin wrote:
>> One of my accounts was being moved to a new server in a way that 
>> would not preserve the IMAP UIDs. Accordingly, I deleted the "mail 
>> source" entirely.
> Good!

(Customer support had never heard this question before, so they had to 
kick it over to the techies... I suggested that they add it to their 
standard instruction sheet.)
> The hostname also changed I assume?

>> I then added the account anew, but of course with the same email 
>> address. That worked, but...
>> Under "Sources", the recreated account shows four unread messages in 
>> Inbox. That's correct, and corresponds to what I had before the 
>> shuffling. However, in the unified Inbox, the sub-folder for that 
>> account shows no counter, i.e., no unread messages. I have a smart 
>> folder under "Inbox" for unseen messages; its subfolder for that 
>> account also shows zero--but when I open that folder, I do see those 
>> four messages. In other words, the smart folder knows which the four 
>> unread messages are but doesn't know how to count them. Huh? The 
>> "Displayed Count" setting for it, the parent "Unseen" folder, and the 
>> unified inbox itself all say "Inherit"; the other folders under 
>> "Unseen" all display the correct count of unread messages.
>> I've seen this on two different computers. On one of those two but 
>> not the other, deleting the source deleting the corresponding folder 
>> under Messages/IMAP; on the other, it did not. (I renamed it to get 
>> it out of the way.)
> Does this issue persist if you relaunch MailMate? If it does then we 
> can try debugging (off list). If it doesn't then it's likely related 
> to removing/adding the account and maybe I can try to reproduce it 
> given the above.
Yes, completely consistent.

         --Steve Bellovin, https://www.cs.columbia.edu/~smb

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