BillionMail vs Listmonk
BillionMail and Listmonk are both email marketing software. BillionMail is open source under AGPL-3.0, with 16k GitHub stars. Listmonk is open source under AGPL-3.0, with 24k GitHub stars.
Which to pick
- Pick BillionMail when
- You want to run your own mail server and campaigns together and know how to manage IP reputation.
- Pick Listmonk when
- You send newsletters to large lists and want to pay only for SMTP or SES instead of per-subscriber pricing.
Side by side
Bundles a mail server (Postfix, Dovecot, Rspamd) with newsletter and email marketing tools in one self-hosted package.
A self-hosted newsletter and mailing list manager in a single Go binary with PostgreSQL, handling lists, campaigns, templates, analytics and transactional mail.
Running your own outbound mail server is hard to get delivered; activity slowed after June 2026.
You handle deliverability, bounces and sending reputation yourself; the newest line is in beta.
Usable
Production-ready
Self-hosted server (both)
Go, PostgreSQL, Redis, Postfix, Dovecot and Rspamd
Go, Vue and PostgreSQL
Open source, AGPL-3.0 (network copyleft) (both)
Use inside your business is unrestricted. If you change it and let customers use it over the internet, you must publish your changes. (both)
16k GitHub stars
24k GitHub stars
Young: started 20 months ago, latest release v4.9.
Established: started 7 years ago, latest release v7.0.0-beta.1.
Other comparisons
More email marketing and newsletter software
Both sides were judged on 2026-11-03 from each project's README and GitHub data. License, age and popularity lines are worked out directly.