description Postal Overview
Postal is a full-featured mail server designed to be easy to deploy and manage. Written in Ruby on Rails, it provides a clean web interface for monitoring and administration. It supports multiple domains, aliases, and custom DNS records. Postal is particularly well-suited for developers and businesses needing a reliable and scalable email sending platform.
It offers detailed analytics and reporting, allowing users to track email delivery and identify potential issues. Its modular design allows for customization and integration with other systems.
info Postal Specifications
| License | MIT |
| Storage | Varies (depends on email volume) |
| Language | Ruby |
| Platform | Linux (Ubuntu/Debian recommended) |
| Framework | Ruby on Rails |
| Protocols | SMTP, IMAP, HTTP REST API |
| Minimum Cpu | 1 core |
| Minimum Ram | 1GB |
| Database Support | MySQL, PostgreSQL |
| Deployment Options | Docker, Manual (bash installer) |
balance Postal Pros & Cons
- Easy to deploy with Docker or manual installation on Linux
- Clean, intuitive web UI for monitoring and administration
- Supports multiple domains, aliases, and custom DNS records
- Built-in click and open tracking with detailed analytics
- Open-source with active community and extensible Ruby on Rails codebase
- Comprehensive logging and alerting for email delivery issues
- Requires Linux server and some technical expertise to set up and maintain
- No built-in spam or virus filtering; needs external tools like SpamAssassin
- Limited official documentation for advanced configuration and scaling
- High resource usage for large email volumes may require beefy server specs
- No native Windows support; runs only on Linux environments
help Postal FAQ
How do I install Postal on a Linux server?
Installation can be done via Docker Compose or the official installer script. You'll need a fresh Ubuntu or Debian server, install dependencies, configure DNS records, and run the setup wizard in the web UI.
Does Postal support IMAP and SMTP for sending and receiving emails?
Yes, Postal includes both an SMTP server for sending and an IMAP server for receiving, along with a REST API for programmatic access and webhooks for event notifications.
Can I use Postal for high-volume email campaigns with tracking?
Postal is designed for developers needing a customizable mail server; it includes built-in click and open tracking, but performance depends on your server resources and proper scaling.
What are the minimum system requirements to run Postal?
A server with at least 1GB RAM, a single CPU core, and sufficient disk space for mail storage is recommended; Docker is optional but simplifies deployment.
Is there a managed or cloud-hosted version of Postal?
Yes, Postal Cloud offers a hosted solution with plans starting at $0 for limited usage and paid tiers for higher email volumes and support.
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What is Postal best for?
Developers and technical teams looking for a self-hosted, customizable mail server with extensive monitoring and analytics capabilities.
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Is Postal worth it in 2026?
What are the key specifications of Postal?
- License: MIT
- Storage: Varies (depends on email volume)
- Language: Ruby
- Platform: Linux (Ubuntu/Debian recommended)
- Framework: Ruby on Rails
- Protocols: SMTP, IMAP, HTTP REST API
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