What are some alternatives?
When comparing FreeLists and CleanEmail, you can also consider the following products
Groups.io - Email and web based discussion group software, includes archiving, emails, wiki, polls, file...
Astro - The ASTRO Command Center software is specifically intended for use with: MixAmp Pro TR (late 2015 release), A50 Gen 3 with Base Stations (late 2016 release), A20 Wireless (late 2017 release).
Usenet.net - Usenet.net has been a trusted Usenet provider since 2004 offering a choice of unlimited Usenet...
Hiver - Manage Customer Support, Sales and Projects right from your Gmail inbox. Collaborate with Shared Labels, Shared Contacts, email notes, email reminders and email templates
Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
MailClark - The Slack bot for external communications