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Self-hosted Email Platforms

A curated collection of the best self-hosted platforms for hosting your own email sending infrastructure..

Postal

Self-hosted mail delivery platform for sending and receiving email

  • Stars

    16,893

  • Last commit

    6 days ago

  • License

    MIT
Run your own mail delivery infrastructure with a web interface, webhooks, IP pools, and spam filtering integrations for inbound and outbound email.

Open Source Alternative to:

Resend

useSend

Pay per email sent, not for contact storage

  • Stars

    4,757

  • Last commit

    19 hours ago

  • License

    AGPL-3.0
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 Alternative to:

Resend

Sessy

Own your SES email analytics, from send to inbox

  • Stars

    944

  • Last commit

    19 hours ago

  • License

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

Open Source Alternative to:

Resend

Hyvor Relay

Open-source email API with enterprise deliverability

  • Stars

    918

  • Last commit

    5 days ago

  • License

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

Open Source Alternative to:

Resend
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