360079 - Mail tags lost when moving mails from one account to another using more than one message filter

Status: RESOLVED WORKSFORME

(MailNews Core :: Filters, defect)

Description

[John Beluga]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20061107 Minefield/3.0a1 X.e1a
Build Identifier: version 3 alpha 1 (20061107)

I use two Thunderbird accounts: one pop, one imap.

In the IMAP account I fetch mail from an IMAP server, apply certain filters to tag messages and use a final filter to move any mail into the Inbox of the POP account where I read it.

Though tagging works as expected, moving mails via the last rule doesn't preserve the tags and they're gone in to POP account's Inbox.

Reproducible: Always

Steps to Reproduce:
1. Set up two mail accounts A and B
2. For account B set up two message filters: the first tags all mails e.g. important, the second one move all mails to account A's Inbox.
3. Send some mails to account B (or run all messages filter on mails that are already there).
4. When looking at A's Inbox the mails will be there but the tag is gone.

Be sure to use two separate message filters. If one tags and moves within one filter everything works as expected. Unfortunately more complex situations require more than one tagging message filters.
Actual Results:  
Mails that have been moved from account B to account A lose all tags.

Expected Results:  
Mails that have been moved from account B to account A keep their tags from the first filter rule.

Workarounds are also welcome.

Comment 1

[David :Bienvenu]

Can I get an imap protocol log of a session where this happens?

So if you tag a message on the imap server manually, then move it to the local inbox, the tag is kept?

Comment 2

[John Beluga]

(In reply to comment #1)
> Can I get an imap protocol log of a session where this happens?

How do I do that? Or do you mean a tcpdump?

> So if you tag a message on the imap server manually, then move it to the local
> inbox, the tag is kept?
 
Correct. Moving a tagged message manually (by mouse) preserves tags. Applying a filter that move an already tagged message also works. But if tagging and moving is both done by filters it fails (i.e. tags are lost).

Comment 3

[David :Bienvenu]

http://www.mozilla.org/quality/mailnews/mail-troubleshoot.html#imap

tells you how to generate an imap protocol log. Thx!

Comment 4

[John Beluga]

Attachment: IMAP log of disappearing tag (tag + move)

The test mail has subject "imap message filter test". It was in the IMAP INBOX.
Two message filters have been automatically applied by running filters on folder. The first one tags as "Later" ($label5), the second one moves to a different pop account's Inbox.
On arrival in the pop account's Inbox the tag is gone.

Comment 5

[John Beluga]

Attachment: imap log of preserved tag (tag + copy)

Above testcase works fine if the mail is copied but moved. So one can use the following workaround:
1. create as many tagging filters as needed.
2. create filters that copy mails to other accounts
3. create an incative dummy filter
4. create one correspondig delete filter for each filter from step 2 (thus simulating a move).

Omitting the dummy filter from step 3 will also cause tags to be lost.

Comment 6

[Wayne Mery (:wsmwk)]

WFM both accounts imap: tag in A, move to B's inbox. Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1b4pre) Gecko/20090312 Shredder/3.0b3pre

dupeme as exercise if someone wants to find the fixing bug