OpenAlternative LogoGitFounders
Postal logo

Postal

Postal is a fully featured open source mail delivery platform that handles both incoming and outgoing emails. It offers users a robust solution comparable to popular services like Sendgrid or Mailgun, with the freedom to run it on their own servers.

Postal is the open source alternative to:
A favicon of Mailchimp
Mailchimp
A favicon of Brevo
Brevo
A favicon of Sendinblue
Sendinblue
A favicon of SendGrid
SendGrid
Postal screenshot

About Postal

Postal provides a complete mail delivery solution for websites and web servers with a user-friendly web interface, scalable infrastructure, and advanced integrations such as webhooks, spam and anti-virus tools, and IP pool management. Its development mode facilitates testing by holding messages, while the comprehensive dashboard allows for efficient server management and mail log tracking.

Key Features

  • Comprehensive web interface for managing mail servers and logs
  • Scalable architecture for dynamic load management
  • Webhooks for real-time notifications on message delivery
  • Development mode for testing and message review
  • IP pools to optimize and maintain IP reputation
  • Spam and anti-virus integrations with SpamAssassin, rspamd, and ClamAV

Summary

Postal empowers businesses with a reliable and customizable mail delivery system that rivals proprietary solutions. It combines ease of use with robust features to meet the demands of modern email management on self-hosted environments.

Related Open Source Tools

Dittofeed logo

Dittofeed

Open-source customer engagement. Automate transactional and marketing messages across email, SMS, mobile push, WhatsApp, Slack, and more 📨

2,172
View tool →
Laudspeaker logo

Laudspeaker

📢 Laudspeaker is an Open Source Customer Engagement and Product Onboarding Platform. Open Source alternative to Braze / One Signal / Customer Io / Appcues / Pendo . Use Laudspeaker to design product onboarding flows and send product and event triggered emails, sms, push and more.

2,324
View tool →
Mautic logo

Mautic

Mautic: Open Source Marketing Automation Software.

7,734
View tool →
Plunk logo

Plunk

The Open-Source Email Platform

3,881
View tool →
Listmonk logo

Listmonk

High performance, self-hosted, newsletter and mailing list manager with a modern dashboard. Single binary app.

16,222
View tool →
Adrian
Created by
Adrian
Mar 9, 2025Updated•1 min read
This content was partially generated using artificial intelligence.

Tool Details

15,283
1,092
63
Since 2017
about 1 month ago
96%

Tech Stack

Language
Ruby
Scss