Postal Review — Honest Pros, Cons & Pricing (2026)

Category: Open source self hosted mail server

Also known as: postal.

Overview

Postal is a fully featured open source mail server for sending and receiving emails. The platform handles message queuing, delivery tracking, webhook notifications, and IP pool management. For technical cold email teams, Postal provides complete control over your sending infrastructure without recurring SaaS costs. You can manage multiple sending domains, configure IP pools for different campaigns, and monitor delivery in real time through the web interface. The tradeoff is significant. You need server administration skills, proper DNS configuration, IP warming expertise, and ongoing maintenance. Most cold email teams are better served by managed platforms, but teams with dedicated DevOps who want full infrastructure ownership will find Postal a capable foundation.

Pricing

Free and open source. You pay only for server hosting and IP addresses.

Strengths

Completely free with no per email or per contact fees regardless of volume
Full control over sending IPs, domains, and delivery configuration
No vendor lock in or risk of account suspension from third party policies

Weaknesses

Requires serious server administration and email infrastructure expertise to set up and maintain
No built in cold email features like sequences, A/B testing, or scheduling

Best For

Technical teams building custom cold email infrastructure with full ownership
High volume senders who want to eliminate per email SaaS costs

Not Ideal For

Non technical teams without DevOps resources to manage mail server infrastructure