Email and newsletters

Mailbutler alternatives

1 open-source project that already does this job. Free to use - not free to run, which is what the numbers on the right are for.

The full assessment →

The projects

Billionmail/BillionMail15,389AGPL-3.0Self-hosted mail server and email marketing platform with sending, newsletters, and tracking features.Open on GitHub

What you give up either way

Cross-client native apps (Apple Mail, Outlook) and their platform integrations
ISO/IEC 27001 certification and documented GDPR hosting guarantees
Microsoft 365 certification and Google verification badges
Enterprise team-management features, SLAs, and 24/7 support
Polished UI/UX and ongoing product polish across many clients

An open-source project doing the core job proves a replacement is possible. It does not prove it matches Mailbutler, and it does not prove anyone has run it for a month. How we decide.