Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Azor - Azor: Al uw projecten, processen en klanten voor al uw medewerkers in één pakket
Groups.io - Email and web based discussion group software, includes archiving, emails, wiki, polls, file...
Adikteev - Adikteev is an advanced re-engagement platform designed for performance-driven marketers.
Gaggle Mail - Gaggle Mail is a simple and easy to use email list manager.
Avenue right - Avenue right is a media buying and digital advertising platform that helps businesses make better decisions with the right advertising.