Assembly Line

Braze vs Postal

Braze and Postal are both marketing automation software. Braze is a commercial product from Braze, Inc. Postal is open source under MIT, with 17k GitHub stars.

Which to pick

Pick Braze when
A large consumer app or brand needs real-time lifecycle messaging driven by app behaviour.
Pick Postal when
You send large volumes of transactional email and want your own Sendgrid-style platform on your own IPs.

Side by side

What it does

Customer engagement platform for real-time, event-driven messaging across push, in-app, email, SMS and web for consumer apps.

A self-hosted mail delivery platform for sending and receiving email from apps over SMTP and HTTP API, with click and open tracking and webhooks.

Watch out

Enterprise pricing and it needs engineering effort to send good event data.

Deliverability, IP reputation and abuse handling become your job.

Ready for

Production-ready (both)

Runs as

Cloud service

Self-hosted server

Built with

Not published

Ruby, Rails and MariaDB

Source code

Closed source, sold by Braze, Inc.

Open source, MIT (permissive)

What the license allows

Closed source: you use it under the maker's terms and cannot change or resell the code.

You can build it into a product you sell, as long as you keep its copyright notice.

How widely known

1.1k Wikipedia readers a month on phones

17k GitHub stars

How established

Not known

Established: started 9 years ago, latest release 3.3.7.

Other comparisons

More marketing automation platforms

Every marketing automation product and project, ranked

Both sides were judged on 2026-11-03 from makers' descriptions, Wikipedia, READMEs and GitHub data. License, age and popularity lines are worked out directly.