[fetchmail-users] Fetch only messages marked as seen

[Matteo B. <m.b...@pe...>]

Hello. I'd like to use fetchmail in order to make a local backup of
mailboxes I usually read online via webmail clients. Since this is
just a backup I won't normally read the fetched messages. I'd like to
know if there is a way to configure fetchmail in order to only fetch,
and possibly delete, messages marked as "seen" on the server. As an
alternative, even an option to only fetch and delete messages older
then n hours/days would be fine. Does such an option exist or there is
a way to achieve the result? I've searched among the man page and the
FAQs with no luck.

Thank you in advance for the help.

-- 
  Matteo Beniamino