Alternative
A private alternative to MailWasher
Klar filters spam on your Mac, inside Apple Mail. No account, no cloud, nothing to hand over.
If you are weighing up MailWasher, here is how Klar differs and where each one is the better pick.
| Aspect | Klar | MailWasher |
|---|---|---|
| Runs on | Your Mac | Your Windows PC |
| Who can read your mail | No one new. Your mail never leaves the device. | Previews mail on the server; junk is deleted before your mail program downloads it |
| Works with | Apple Mail, with any account: IMAP, Gmail, iCloud, Exchange | POP and IMAP accounts, on Windows only |
| Price | Free forever | Free for one address; Pro from $49.95 |
Klar fits better when You read mail on a Mac: MailWasher's own FAQ says it is Windows-only
The honest picks
- MailWasher
- A veteran Windows tool with a distinct approach: inspect mail on the server and delete junk before it reaches your machine, with Bayesian learning and blocklists. On a Windows PC with POP or IMAP it earns its keep. 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 2026: c-command.com, sanebox.com, support.google.com, learn.microsoft.com, libraesva.com, spamassassin.apache.org, rspamd.com, mailinblack.com, leavemealone.com, clean.email, mailwasher.net. 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.
