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Open Source Email Platforms using Golang

A curated collection of the best open source platforms for hosting your own email sending infrastructure. using Golang.

Hyvor Relay

Open-source email API with enterprise deliverability

  • Stars

    920

  • Last commit

    15 hours 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:

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