I have been asked to many times, but it is part of a largish website written in Common Lisp. The codebase is written by me over 3 years with no consideration for modularity. It would be a considerable effort to break it out.

There is nothing technically novel about it. Heck, python even includes an SMTP server in the stdlib. You could.probably write a PoC in a couple of hours.

> so I the time it would take for me to share it would be longer than to rewrite it in some hip language.

I'm reasonably sure the answer to your questions is yes.