Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
Klaviyo - Klaviyo helps brands own the customer experience, grow higher-value relationships, and deliver more personalized marketing experiences across email, mobile, and web.
Mailman 3 - Dedicated Mailman 3 installation. Unlimited lists/configuration. Free subdomain at mailman3.com. Dedicated support for list admins.
Criteo - Build, scale, and activate first-party audiences with The Commerce Media Platform.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.