Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
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
Clickfunnels - Optimize sales page with a simple drag-n-drop interface
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
VipeCloud - Forecast Automation. Sales, Pipeline, and Campaigns all in one product - a CRM replacement.