SAI360 - GRC Platforms
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
Aptible - Aptible is a secure, private cloud deployment platform built to automate HIPAA compliance.
Mailman 3 - Dedicated Mailman 3 installation. Unlimited lists/configuration. Free subdomain at mailman3.com. Dedicated support for list admins.
Fastpath Assure - Fastpath Assure is a cloud GRC platform that integrates with various ERP systems
MailChimp - MailChimp is the best way to design, send, and share email newsletters.