MillionSend

Open-source, self-hostable transactional email platform with a Resend-compatible API.

PlatformWebfreemium

MillionSend is an open-source email platform that can be self-hosted on a team's own AWS SES account or used as a hosted cloud service, with a Resend-compatible API so switching providers means changing environment variables rather than rewriting integration code. It supports idempotent sends, API key management, and automatic suppression of bounces and complaints. It's aimed at developers who want control over their email infrastructure without vendor lock-in.

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