Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
Sendlane - Marketing automation and campaign management solution
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
CS-Cart Multi-Vendor - On-premises eCommerce marketplace builder
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
SmartEngage - Cross-channel autoresponder for marketing automation