Email and newsletters

Proton Mail Plus alternatives

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

The full assessment →

The projects

lavabit/magma1,835AGPL-3.0An encrypted email server daemon providing SMTP, POP, IMAP and HTTP access.Open on GitHub Billionmail/BillionMail15,389AGPL-3.0Self-hosted mail server and email marketing platform for sending and receiving email at scale.Open on GitHub

What you give up either way

Proton’s global scale and infrastructure (100M+ users)
Brand trust and enterprise audits/certifications
Bundled ecosystem (VPN, Drive, Pass, Lumo AI) and native mobile/desktop apps
Independent security audits and long-term transparency/reporting

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