🚀 go-pugleaf

According to dheller@cory.Berkeley.EDU (Dan Heller):
>Why is a separte program necessary?  I don't know-- I think I should
>really get and build Elm so I know what I'm talking about when it comes
>to issues like this.  but in mush, all you have to do is:
>
>pick -s "pattern" | mail -f <address>
>
>This forwards all messages matching a particular pattern to another site.

Elm is quite capable of taking an already-arrived message and sending a copy
of it to another user.  The "bounce" command performs that function.

However, the original question referred to the "filter" program, provided
with Elm, which forwards mail *at the time of its arrival*.  My pointer to
deliver is based on my own (biased) opinion that deliver is a better solution
than filter to the forward-on-arrival problem.