is a package for sending mail from Tcl >= 8.0. No C code.
Author and ©: D. J. Hagberg, Keith Vetter.
From the announcement on comp.lang.tcl:
Thanks to some constructive criticism by Laurent Duperval,
I've decided it was time to package up and release my little
SMTP emailing package for Tcl. I would still consider this
software to be alpha-quality (subject to change based on
reviewer comments), but it is stable and used every day at