Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
Synthesio - Synthesio is a social intelligence tool or a marketing software that is specially made for the purpose of social media monitoring and social analytics.
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
Swift Social - All-in-One Social Media Growth and Management Tool
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
LeadsRX - LeadsRX is a marketing attribution software that gives marketers insights into which advertising campaigns result in conversions.