Let's see. I've used Mail::Sender and Mail::Sendmail, but not enough to say "one of these is better".

Like you, I've mainly used Mail::Sendmail because of the fact that it's more familiar to me. It worked fine for me in a few mass-mailing tasks involving 3000-4000 emails at a shot... *shudder* the boss told me the list was subscription-only, but I still felt dirty sending out mass mailings...

In other words, I can't tell you how good the alternatives are, but I can say that Mail::Sendmail put up with the most stressful tests I'm ever going to put it through.

"All you need is ignorance and confidence; then success is sure."-- Mark Twain