Head to head
Klar vs SaneBox
What actually differs: where each filter runs, who gets to read your mail, and what it costs.
| Aspect | Klar | SaneBox |
|---|---|---|
| Runs on | Your Mac | SaneBox's servers |
| Who can read your mail | No one new. Your mail never leaves the device. | SaneBox analyzes headers in its cloud; some features fetch message bodies |
| Works with | Apple Mail, with any account: IMAP, Gmail, iCloud, Exchange | Any IMAP or Exchange account |
| Price | Free | From $4.99/month (2-year billing) |
Klar fits better when Confidentiality matters: sorting without cloud access, marketing via Klar Plus (paid)
The honest picks
- SaneBox
- Not primarily a spam filter: it sorts your inbox by importance, in the cloud. Pick it if your problem is too much legitimate mail and you are comfortable giving a service access to your mailbox.
- 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 2026: c-command.com, sanebox.com, support.google.com, learn.microsoft.com, libraesva.com, spamassassin.apache.org, rspamd.com, mailinblack.com. Klar is not affiliated with or endorsed by any vendor named here; names are used only to identify the products.
The on-device option
Free, private, in Apple Mail.
