Tim,
This is pretty easy to do at the moment. If you have never played with
PGP you may never have uncommented those PGP lines in the yarn config
file. Two of them are external hooks that appear on the send menu. I
have one directed to a fairly trivial REXX script (just really a set of
'say' statements, a 'charin', and some 'ifs') that add a lot more PGP
options than is usually possible under Yarn. I think that it should be
fairly easy to have a uuencode line here too and come to that an option
to enter any other command that you wanted.
In case I am unclear, I know that I often am:
Uncomment the line:
#encrypt=pgp -aest %f -o %o
and change it to
encrypt=c:\cmds\coolrexx.cmd %f
write coolrexx.cmd (the argument will be the message of course) and away
you go.
Hope that helps,
Ian Goodyer