6 Best Open Source MailerSend Alternatives
A curated collection of the 6 best open source and self-hosted alternatives to MailerSend in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for MailerSend in 2026? The top open-source alternative is Plunk — Plunk unifies marketing, transactional, and broadcast emails into a single, complete solution for businesses of all sizes..
Other highly rated open-source MailerSend alternatives include useSend, Sessy and Hyvor Relay.
Plunk unifies marketing, transactional, and broadcast emails into a single, complete solution for businesses of all sizes.
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.
Open source email platform for transactional and marketing emails. Self-host or use cloud service with transparent pricing - pay only for emails sent.
Track SES deliveries, bounces, opens and clicks in a self-hosted dashboard with real-time search, analytics and reputation monitoring.
Track SES deliveries, bounces, opens and clicks in a self-hosted dashboard with real-time search, analytics and reputation monitoring.
Self-hosted email API alternative to AWS SES & Mailgun. Open-source AGPL-3.0 with enterprise features, automated deliverability, and cloud version coming 2026.
Self-hosted email API alternative to AWS SES & Mailgun. Open-source AGPL-3.0 with enterprise features, automated deliverability, and cloud version coming 2026.
00 is an open-source email API and infrastructure solution that allows developers to own and control their email stack.
00 is an open-source email API and infrastructure solution that allows developers to own and control their email stack.
Build email templates as React components and automations in TypeScript. Deploy to your AWS account with SES integration. Marketing teams edit content without code.
Build email templates as React components and automations in TypeScript. Deploy to your AWS account with SES integration. Marketing teams edit content without code.
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