Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
ReadNotify - ReadNotify enables the user to know when email is sent and the reciever reads the email.
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
Intelliverse Email Tracker - Intelliverse Email Tracker provides insights to increase the productivity of your emails.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Komiko - Komiko is a sales intelligence solution to drive sales, retention and expansion.