Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
Mailman 3 - Dedicated Mailman 3 installation. Unlimited lists/configuration. Free subdomain at mailman3.com. Dedicated support for list admins.
ActiveCampaign - Integrated email marketing, marketing automation, and small business CRM. Send beautiful newsletters, setup behavioral based automations, and benefit from sales automation.
Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
Pardot - Salesforce B2B marketing automation