Free and Open Source messaging and emailing app that combines common web...
Prometheus Alertmanager
A cross-platform .NET library for IMAP, POP3, and SMTP.
Tuta is an email service with a strong focus on security and privacy tha...
Insular email distribution - mail server as Docker images
A few simple, but solid patterns for responsive HTML email templates and...
The SimpleLogin back-end and web app
Drag-n-Drop Email Editor Component for React.js
HEML is an open source markup language for building responsive email.
Check if an email address exists without sending any email, written in R...
Email OSINT & Password breach hunting tool, locally or using premium ser...
An open source email campaign management tool for nonprofits
An automated e-mail OSINT tool
A list of amazing Newsletters
Create, preview (browser/iOS Simulator), and send custom email templates...