Klar vs Spamihilator
What actually differs: where each filter runs, who gets to read your mail, and what it costs.
| Aspect | Klar | Spamihilator |
|---|---|---|
| Runs on | Your Mac | Your Windows PC |
| Who can read your mail | No one new during filtering. Classification stays on your device. | No new third party. It examines mail locally between the server and your mail client. |
| Works with | Apple Mail, with any account: IMAP, Gmail, iCloud, Exchange | POP3 and IMAP accounts with almost any Windows mail client |
| Price | Free forever | Free |
Klar fits better when you read mail on a Mac and want an Apple Mail extension instead of configuring a local proxy
The honest picks
- Spamihilator
- A configurable Windows proxy with Bayesian learning, word, link and rule filters, plugins, training and a recycle bin. Pick it if you want to tune a classic local filter across Windows mail clients. Its latest official release is from 2022, and there is no Mac version.
- Klar
- Pick Klar if you read mail in Apple Mail and want a modern multilingual model that runs entirely on your Mac. No account, no cloud, nothing to hand over.
Product and price details from the vendors' public pages, July and August 2026: spamihilator.com. Klar is not affiliated with any vendor named here. No vendor endorses Klar. Product names only identify the tools.
Reclaim your inbox
Spam filter for Apple Mail. Free on the App Store.
