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Open Source Email Platforms using GitHub

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

AgentMail

Email inbox API built for AI agents and workflows

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35
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15
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12 days ago

Provides AI agents with real email inboxes via REST API. Create inboxes instantly, send and receive messages, search threads, and handle attachments programmatically.

Hyvor Relay

Open-source email API with enterprise deliverability

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640
Forks
34
Last commit
14 hours ago

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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