[Dovecot] download IMAP folders via POP3

[Jakob Grießmann]

Hi Sahil,

> POP3 should download the newly created folders, unless there are some
> other idiosyncrasies of which we're not aware.  But as a matter of
> practice, why the mismatch?  Better to have users on IMAP from desktop
> and notebook.  Unless this is a mandate "from above" or a legacy issue,
> move everyone to IMAP!

well, IMAP needs far more resources on the mail server, so for some
users POP3 is desirable. :-)

Jakob