Putting UIDL value into X-UIDL: header

Aki Tuomi aki.tuomi at open-xchange.com
Mon Dec 14 08:55:47 EET 2020

> On 13/12/2020 11:49 Süleyman Düzdaban <suleyman.duzdaban at ankara.edu.tr> wrote:
> Hi,
> Is there any way to put UIDL value into X-UIDL: header with Dovecot or 
> Sieve?
> As stated in https://wiki2.dovecot.org/Migration page QPopper can do that.
> I'm asking this for preventing clients who are using POP to re-download 
> messages and making future migrations easy.
> I can really benefit from inserting UIDL values even only for the new 
> messages from now on, but if there is any way to put it into all 
> messages in all mailboxes (Maildir) I would be grateful for that too.
> Dovecot version: 2.3.8 (9df20d2db)
> Thanks in advance.


If you are doing migration, you can try pop3_migration_plugin for this. See https://wiki.dovecot.org/Migration/Dsync


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