[Dovecot] Feature request: Force leave copy on server

[Timo Sirainen]

On Mon, 2008-12-01 at 11:41 +0000, Bárður Háskor wrote:
> It would be very nice, if I could force users to leave a copy on the  
> server when using POP3. This is because users primarily use a web  
> interface to access mail (the web interface uses IMAP), but users can  
> also download messages using POP3.

My guess is that would confuse clients and they would download the same
mails over and over and over again.

> Users who forget to set the "Leave copy on server" get all their  
> messages deleted in the web interface, and mostly they don't want  
> (expect) this behavior. Isn't it possible to create another way to tag  
> POP3 messages as deleted without these being deleted in IMAP?

I guess it would be possible to create some kind of a virtual POP3
mailbox where expunging a message simply removes it from that virtual
mailbox, but not from the primary mailbox that's visible to IMAP. While
expunging a message in IMAP would remove it also from POP3 mailbox too.

Anyway, I don't have time to implement that anytime soon.

Also it would have the problem that if a user doesn't use IMAP at all
then his mails would never get deleted.
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