Mailman vs. SmtpJS
Take a look at this side-by-side comparison of Mailman and SmtpJS.
At a Glance
MMailman
About Mailman
Mailman is free software for managing electronic mail discussion and e-newsletter lists. Mailman is integrated with the web, making it easy for users to manage their accounts and for list owners to administer their lists. Mailman supports built-in archiving, automatic bounce processing, content filtering, digest delivery, spam filters, and more.