Antispam That Stays on Your Server
Most antispam products require you to route your email through someone else's cloud. SpamFoo installs alongside your mail server and classifies email locally.
The standard approach to antispam hasn't changed in years: point your MX records at a third-party service, let them scan every message, and forward what they decide is clean. It works, but it means every email your organization sends and receives passes through infrastructure you don't control.
For some administrators, that's fine. For others, it's a problem. If you're in a regulated industry, it's a compliance question you'd rather not answer. If you're running your own mail server because you value control, handing your mail flow to a third party defeats the purpose.
And even if none of that bothers you, cloud-routed antispam still has a fundamental weakness: it's one more external dependency. If the service goes down, your mail flow stops. If they change their pricing or get acquired, you're stuck migrating under pressure.
SpamFoo takes a different approach. It runs on your server, classifies email where it already lives, and keeps your messages on your infrastructure by default.
How SpamFoo Works Differently
Installs Alongside Your Mail Server
SpamFoo runs as a service on the same machine or network as your mail server. No MX record changes, DNS redirects, or routing through external infrastructure. Your mail flow stays exactly as it is.
Signals Analyzed Locally
Every email is analyzed for important spam-indicating signals: headers, sender reputation, authentication records, content patterns, link behavior, and more. All of this happens on your hardware, using lightweight AI models that run on standard CPUs.
Your Emails Stay on Your Server
SpamFoo classifies messages locally on your hardware. Anonymized metadata leaves your server only when reputation lookups call for it. When users correct a classification, only the mathematical attributes of the correction are shared to improve the models, never message content, and recipients can additionally opt in from their email client to contribute sanitized content.
Built for Administrators Who Run Their Own Mail
SpamFoo is designed for administrators running their own mail servers who want effective spam filtering without giving up control. It works with SmarterMail as well as other mail servers through multiple integration modes: CLI, directory watching, or the REST API.
No migration required. Point SpamFoo at your mail flow and let it work.
Antispam that respects your infrastructure
SpamFoo is coming soon. Get notified when it's ready.