[Dovecot] sa learning from an imap spam folder

[Zbigniew Szalbot]

Hello,

I am sorry if I am writing to a wrong list because honestly I do not
know where to write but I would like to be able to set up sa-learn via
cron to learn from spam folder of a particular email account (via
IMAP).

Can anyone share how to do it? Is dovecot involved in it?
I am using:
Exim 4.69
Dovecot  1.0.10
p5-Mail-SpamAssassin-3.2.1

Thanks a lot for helping.

Zbigniew Szalbot