Paul Wilson writes:
I am curious as to exactly what part of the documentation led you to
such a conclusion.
The short answer is: no. This cannot be done in maildrop.
The part that led me to that conclusion was this portion from the
maildropfilter manpage (under the Other Special Variables heading
[http://www.courier-mta.org/maildrop/maildropfilter.html]):
You know, I completely forgot about it. Now I understand where the
confusion lies.
Sending a message with 'test' in the subject now results in a message named
'1137770494.M964865P8797V0000000000001602I00A40047_0.rabid,S\=721:2,' in
the new directory of the maildir, and a file called
'1137770494.M964865P8797V0000000000001602I00A40047_0.rabid,S\=721' in
the courierimapkeywords folder. Contents of the keywords file are '\Seen'.
\Seen is not a keyword.
\Seen is a message status flag.
That's where the disconnect is.
You can set various custom keywords that are supported by your IMAP client,
such as "$spam", "$urgent", or whatever, with this. Keywords are a
completely different beast than message status flags, which is not
implemented.