Sendlane - Marketing automation and campaign management solution
Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
SmartEngage - Cross-channel autoresponder for marketing automation
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
BirdSend - BirdSend is the email marketing software that allows you to create beautiful and appealing marketing campaigns, and achieve the desired results.
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES