senders

• Email::Sender — EC recommended
  • "quickstart" manual
• MIME::Lite
• Mail::Mailer — terrible reviews
• Net::SMTP — core module, old
• Mail::Send — deprecated in favor of Mail::Sender
• Mail::Sender — OLLLLDD
• Perl Email Project — endorsed modules
  • list of modules
• list from the Extended Core (about Extended Core)
• "sending email with perl best practice"
• LOTS of StackOverflow suggestions

builders

• Email::Simple — PEP endorsed, EC recommended, very popular
• Email::Stuff — fluent interface, PEP endorsed
• Email::MIME::Kit — EC recommended
• MIME::Lite
• Mail::Builder::Simple