[REBOL] Newsletter via Procmail

[evans]

My web host supports REBOL and limited procmail but not SMTP (direct outgoing
mail).  I want to create an opt-in/opt-out subscriber e-mail newsletter with
REBOL that runs through their procmail.

What I need are some simple REBOL commands to test sending messages through
procmail.  I know next to nothing about procmail and would rather things stay
that way if they can.

They do support the procmail-based "SmartList" system for discussion groups.  So
in principle REBOL could interface to procmail and accomplish the same thing.
In may case I don't need a discussion group, just a newsletter.

I am learning a lot about REBOL on this e-list and appreciate all inputs.

Sincerely,

Mark Evans