Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
Kudos - Kudos is the simple and easy to use employee recognition software that enhances employee engagement and team communication.
Mailman 3 - Dedicated Mailman 3 installation. Unlimited lists/configuration. Free subdomain at mailman3.com. Dedicated support for list admins.
Fond - Fond employee engagement platform helps companies increase employee happiness with recognition, rewards, perks and survey programs to maximize impact..
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Bonusly - Recognition and rewards that make work fun