450376 - When a Gmail IMAP mail is copied(or moved) to [Gmail]/Spam or [Gmail]/Trash, copy of the mail in any Gmail IMAP folder is automatically deleted, so it looks to be mail loss for user

Status: RESOLVED INVALID

(MailNews Core :: Networking: IMAP, defect)

Description

[WADA:World Anti-bad-Duping Agency]

Attachment: IMAP log for copy to [Gmail]/Spam

When a Gmail IMAP mail is copied(or moved) to [Gmail]/Spam or [Gmail]/Trash, copy of the mail in any Gmail IMAP folder is automatically deleted.
Gmail removes all Gmail's label when COPY/MOVE to [Gmail]/Spam & [Gmail]/Trash folder of Gmail IMAP. So it's design/spec of Gmail/Gmail IMAP.
However, it looks to be mail loss for user.
This is one of "silent delete of mail by Gmail IMAP" cases.

Tested with Tb Trunk 2008/8/09 build.
[Test Procedure]
(1) Copy a mail to Test/X8 and Text/X9 folder (no other mail exists).
    Open Test/X8 and Text/X9. 
(2) At Test/X9: Copy the mail to [Gmail]/Spam.
(3) Via IDLE, delete/expunge is notified for Test/X9 and Test/X8.
    Then mail count of Text/X8 and Test/X9 is automatically changed to 0.

Above is similar to following scenario with usual IMAP server.
   --------                                 --------
   Client-1                                 Client-2
   --------                                 --------
　 Copy a mail in Text/X9 to [Gmail]/Spam
                                            Delete mail in Test/X8, Test/X9
                                            Expunge
   Notify of delete&expunge via IDLE
     for Test/X8 and Test/X9

Note:
If delete model is "Move to Trash model" and target folder is [Gmail]Trash, "Undo delete" does do nothing(Gmail IMAP returns "OK" to request to flag -\Deleted).
Bug 417167 is for this issue.

Comment 1

[WADA:World Anti-bad-Duping Agency]

Note:
This bug will be closed as INVALID soon, because this bug's phenomenon is due to special Gmail/Gmail IMAP design/spec(never be Tb's fault).
This bug's purpose is to help analysis of funny phenomena with Gmail IMAP, and to help Bug 450227.

Comment 2

[WADA:World Anti-bad-Duping Agency]

Note:
As I wrote Bug 402793 Comment #8, move back of the mail to a Gmail IMAP folder(other than [Gmail]/Spam, [Gmail]/Trash) recovers all Gmail's labels, by recent Gmail IMAP enhancement.
So lost mail in any Gmail IMAP folder can be recovered by "move back" operation from [Gmail]/Spam or [Gmail]/Trash to a Gmail IMAP folder.
Sorry but I don't know Gmail's behaviour when "copy back". When "copy back" from [Gmail]/Spam or [Gmail]/Trash, mail stays in [Gmail]/Spam or [Gmail]/Trash too.
I don't know what will happen in this case with Gmail/Gmail IMAP.

By the way, it means loss of capability to "remove all Gmail's labels attached to mails at a glance by copy/move mails to [Gmail]/Trash folder via Gmail IMAP".
It's sad for me...

Comment 3

[Wayne Mery (:wsmwk)]

(In reply to WADA:World Anti-bad-Duping Agency from comment #1)
> Note:
> This bug will be closed as INVALID soon, because this bug's phenomenon is
> due to special Gmail/Gmail IMAP design/spec(never be Tb's fault).
> This bug's purpose is to help analysis of funny phenomena with Gmail IMAP,
> and to help Bug 450227.

It seems to me these should both be closed, because we should not attempt to override gmail behavior here. Further, I wonder if we should not allow user to chose delete model in thunderbird.

Comment 4

[WADA:World Anti-bad-Duping Agency]

(In reply to Wayne Mery (:wsmwk, NI for questions) from comment #3)
> It seems to me these should both be closed,(snip)

I think so.

Comment 5

[Wayne Mery (:wsmwk)]

invalid per previous comments