Postal

Postal is a complete, open-source mail delivery platform for managing massively scalable outgoing email infrastructure—designed as a self-hosted alternative to SendGrid, Mailgun, or Postmark. It provides a web UI for managing email streams, logs, and delivery infrastructure. Postal is highly scalable and intended for developers and businesses needing reliable email dispatch.

Features

Full SMTP sending platform with web dashboard and mail logs
Scalable architecture: horizontally scale for large email volume
API & webhook support for integration and delivery tracking
Delivery retry and bounce handling mechanisms
DNS configuration guidance (DKIM/SPF/DMARC)
User and domain management via UI

Project Samples

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License

MIT License

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Postal Web Site

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Additional Project Details

Operating Systems

Linux, Mac

Programming Language

Ruby

Related Categories

Ruby Email Servers

Registered

2025-07-31

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