Discourse is an open source discussion platform used as a mailing list, discussion forum, long-form chat room, and more.
FormKeep has everything you need from a Forms Designer and Email Campaign feature, to simple email notifications and great integrations like Discourse. Native solutions for Google Sheets and Slack are also available. A free plan to get you started and much more, what are you waiting for, get started now!
Learn more at www.discourse.org