Head to head
Klar vs Leave Me Alone
What actually differs: where each filter runs, who gets to read your mail, and what it costs.
| Aspect | Klar | Leave Me Alone |
|---|---|---|
| Runs on | Your Mac | Leave Me Alone's servers |
| Who can read your mail | No one new. Your mail never leaves the device. | Reads your mailbox in its cloud and stores subscription metadata |
| Works with | Apple Mail, with any account: IMAP, Gmail, iCloud, Exchange | Gmail, Outlook and any IMAP mailbox |
| Price | Free forever | From $9/month, or a $19 one-time 7-day pass |
Klar fits better when Spam is the problem: a filter that learns on your Mac, without giving a service access to your mailbox
The honest picks
- Leave Me Alone
- Built for bulk unsubscribing: it follows unsubscribe links for you and rolls newsletters into digests. Its spam blocker learns in its cloud and targets cold outreach. Pick it to prune subscriptions, not as a spam filter.
- 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.
