[Dovecot] Idea: POP3 deletion as a flag

[Tom Hendrikx]

On 03-05-13 18:49, lst_hoe02 at kwsoft.de wrote:
> 
> Zitat von Timo Sirainen <tss at iki.fi>:
> 
>> GMail doesn't delete mails when POP3 client issues a DELE command for
>> it. Instead they just become invisible for future POP3 sessions, but
>> they still exist for IMAP/webmail. The same could be implemented
>> pretty easily for Dovecot:
>>
>>  - Add a new setting to enable this: pop3_deleted_flag = $POP3Deleted
>>  - When DELEting a message, add this flag to the message.
>>  - When listing messages, skip all messages that have this flag.
>>  - Also hide this flag from IMAP clients(?)
>>
>> Thoughts? Probably 20 lines of new code.
> 
> Hmm, this would lead to every increasing mailboxes for POP3 only users.
> What about this
> 
> - Use some setting to express that POP3 deleted mail should be IMAP
> mark-as-deleted

This conflicts with (many) IMAP user agents that don't use
mark-as-deleted but have some version of 'move to trash folder' instead.
I do agree that it's probably the Right Way (tm) :)

> - Skip messages marked as deleted with POP3, maybe even as default?
> 
> With this on IMAP access you clearly see what is going on. Also if you
> delete Messages by IMAP they won't get downloaded by POP3. This would
> also fit with mail providers doing an "IMAP" expunge/purge on a fixed
> timebase.

Kind regards,
	Tom