Novu : The open-source notifications infrastructure. A fully-featured microservice to send SMS, E-mail, Slack and Push notifications. Embeddable notification...
TellForm : An opensource alternative to TypeForm that can create stunning mobile-ready forms , surveys and questionnaires.
Mailtrain : Mailtrain is a self hosted newsletter application built on Node.js (v5+) and MySQL (v5.5+ or MariaDB). Mailtrain supports subscriber list management, ...
Maily Herald : Maily Herald is a Ruby on Rails engine that helps you send and manage your mailings.
Think of Maily as a self-hosted Mailchimp® you can easily integra...
SimpleLogin : With email aliases , you can be anonymous online and protect your inbox against spams and phishing. Open-source.