# BillionMail

> BillionMail (15.9k stars, v4.9 Dec 2025, last push June 2026) bundles a Postfix/Dovecot mail server, Roundcube webmail and an email-marketing panel: contacts with lists and tags, templates with variables and spintax, scheduled campaigns, a send API and delivery, open and click-through dashboards. AGPL-3.0. It sends from your own server, so no sending service is required, but outbound port 25 must be open and deliverability is up to you (an SMTP relay is optional). Linux only, 1 core / 1 GB RAM minimum. It also markets itself for cold outreach. No automations or paid subscriptions are listed.

- Repository: https://github.com/Billionmail/BillionMail
- Official docs: https://www.billionmail.com/start/what.html
- Checked: 2026-10-16

## What it replaces
- Mailchimp: Subscriber lists and segments, Campaign editor and templates, Open and click analytics (partial). Lists, campaigns and stats on your own mail server; no automations, forms or landing pages listed.

## Facts, with sources

| Question | Status | Answer | Source | Checked |
|---|---|---|---|---|
| Runs on my machine? | Confirmed | Self-hosted on a Linux server via install script, Docker Compose or aaPanel | https://github.com/Billionmail/BillionMail#other-installation-methods | 2026-10-16 |
| Code licence | Partial | AGPL-3.0 (copyleft) | https://github.com/Billionmail/BillionMail#license | 2026-10-16 |
| Model weights licence | Confirmed | No separate model weights | https://github.com/Billionmail/BillionMail#readme | 2026-10-16 |
| Commercial use | Partial | Yes under AGPL-3.0 copyleft terms | https://github.com/Billionmail/BillionMail#license | 2026-10-16 |
| Paid services needed? | Confirmed | None required; built-in mail server sends directly if outbound port 25 is open, SMTP relay optional | https://www.billionmail.com/start/preparation.html | 2026-10-16 |
| Hardware | Confirmed | Minimum 1 CPU core, 1 GB RAM, 20 GB disk | https://www.billionmail.com/start/preparation.html | 2026-10-16 |
| Operating systems | Partial | Linux only (amd64 and arm64) | https://www.billionmail.com/start/preparation.html | 2026-10-16 |
| Setup effort | Confirmed | Medium; one install script or Docker Compose, then DNS (SPF, DKIM, DMARC) and open mail ports | https://www.billionmail.com/start/preparation.html | 2026-10-16 |

GitHub: 15916 stars, 1751 forks, last push 2026-06-11, archived: no.
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Source: RepoQuarry (https://repoquarry.dev/projects/billionmail). Data licence: CC BY 4.0. Quotes are from project documentation and belong to their authors.