Best Open Source Postmark Alternatives

Self-hosted email delivery platform with powerful features for transactional and bulk emails, offering full control and customization.

Plunk unifies marketing, transactional, and broadcast emails into a single, complete solution for businesses of all sizes.

Open source email platform for transactional and marketing emails. Self-host or use cloud service with transparent pricing - pay only for emails sent.

A comprehensive platform for managing transactional and marketing emails through AWS SES, featuring customer data management, SMS capabilities, and workflow automation.

00 is an open-source email API and infrastructure solution that allows developers to own and control their email stack.

Self-hosted email API alternative to AWS SES & Mailgun. Open-source AGPL-3.0 with enterprise features, automated deliverability, and cloud version coming 2026.

Track SES deliveries, bounces, opens and clicks in a self-hosted dashboard with real-time search, analytics and reputation monitoring.

Build email templates as React components and automations in TypeScript. Deploy to your AWS account with SES integration. Marketing teams edit content without code.