Klar vs Mailinblack
What actually differs: where each filter runs, who gets to read your mail, and what it costs.
| Aspect | Klar | Mailinblack |
|---|---|---|
| Runs on | Your Mac | Mailinblack's cloud, or an on-premise gateway |
| Who can read your mail | No one new during filtering. Classification stays on your device. | Analyzes your organization's mail in its cloud to filter it |
| Works with | Apple Mail, with any account: IMAP, Gmail, iCloud, Exchange | Your organization's mailboxes, in front of the mail server |
| Price | Free forever | Per-mailbox subscription (quote) |
Klar fits better when You're an individual on Apple Mail, not an organization buying a managed gateway
The honest picks
- Mailinblack
- A French email security service for organizations. It filters mail at the gateway, runs fake phishing attacks to train staff, and gives admins a console. Aimed at companies, not individuals reading mail in Apple Mail.
- 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: mailinblack.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.
