Dear Aki,

I don't think so. As far as I know, courier can't access mailbox inboxes, so POP3 is the only way to read the emails in those inboxes.

Yours sincerely,

El lun., 9 ago. 2021 6:41 a. m., Aki Tuomi <aki.tuomi@open-xchange.com> escribió:

> On 04/08/2021 16:15 Jesús Ángel del Pozo Domínguez <jesusangel.delpozo@gmail.com> wrote:
>
>
> Hello,
>
> I am trying to migrate mailboxes from an old pop/imap server to a new one using Dovecot 2.3.15. The old server uses tpop3d and courier as POP and IMAP servers, respectively.
>
> Whereas I can migrate IMAP mailboxes without many problems, I am facing difficulties while trying to do the same with POP ones. The problem is that dsync opens simultaneous connections to the remote POP server, so the remote mailbox gets locked and dsync can not copy the messages.

Is it possible to migrate the POP3 accounts over IMAP, and use https://doc.dovecot.org/settings/plugin/pop3-migration-plugin/?

Aki