[pkg-fetchmail-maint] Bug#466299: (no subject)

[Matthias Andree]

The issue is that the user expects fetchmail to get along with setting
\Deleted, but in fact it additionally sets \Seen.  Achieving this requires
changes that are unsuitable for the 6.X series of fetchmail releases, and
requires SEARCH by flags, which not all servers implement. Cloning bug to
wishlist; Nico, feel free to reopen this and merge the bugs.