Alternative
A private alternative to Libraesva
Klar filters spam on your Mac, inside Apple Mail. No account, no cloud, nothing to hand over.
If you are weighing up Libraesva, here is how Klar differs and where each one is the better pick.
| Aspect | Klar | Libraesva |
|---|---|---|
| Runs on | Your Mac | Your organization's servers, or its cloud |
| Who can read your mail | No one new. Your mail never leaves the device. | Stays on your infrastructure when deployed on-premises |
| Works with | Apple Mail, with any account: IMAP, Gmail, iCloud, Exchange | Your organization's mail flow, in front of the mail server |
| Price | Free | Enterprise quote |
Klar fits better when You're an individual, or a small self-hosted server (Klar Pro milter)
The honest picks
- Libraesva
- An EU email security gateway for organizations that run their own mail: appliance, sandboxing, compliance tooling. It is not aimed at individuals.For a lightweight self-hosted layer, see Klar for servers.
- 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.
