knadh / listmonk

High performance, self-hosted, newsletter and mailing list manager with a modern dashboard. Single binary app.

dittofeed / dittofeed

Open-source customer engagement. Automate transactional and marketing messages across email, SMS, mobile push, WhatsApp, Slack, and more 📨

Notifuse / notifuse

Open-source, self-hosted newsletter, email marketing and transactional email platform. Visual MJML editor, Liquid templating, 7 sending providers.

phpList / phplist3

Fully functional Open Source email marketing manager for creating, sending, integrating, and analysing email campaigns and newsletters.

goposta / posta

Self-hosted email delivery platform that enables applications to send emails via HTTP APIs while handling SMTP delivery, templates, storage, security, and analytics. Fully self-hostable alternative to services like SendGrid or Mailgun.

opencoredev / email-sdk

One simple SDK for transactional email across 23 adapters

MillionSend / millionsend

The open-source email platform — self-host on your own AWS SES, or use the cloud. Resend-compatible API.

GagnDeep / mailysend

A Resend-compatible email platform on Cloudflare Workers — transactional sending, broadcasts, automations, inbound mail and deliverability analytics. MIT, one-click deployable into your own account.

Maildun / maildun

Self-hosted email platform for teams: audiences, campaigns, transactional email, automations, and first-party engagement tracking. Laravel 13 · Inertia 3 · React 19.