Klar blog
Signal over noise
Comparisons, privacy field guides and the mechanics of spam filtering.
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How to check what a Mac app is actually allowed to do
The App Store, TestFlight and a notarized DMG are three different guarantees. What each one checks, and the one command that tells you whether a Mac app can send your data anywhere.
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Your Inbox Should Own Its Intelligence
Everyday AI belongs in software that keeps repeated, private judgment close to the user, with a specialist model for each part of the work.
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Why you shouldn’t unsubscribe from spam
For mail you signed up for, unsubscribe freely. For actual spam, the unsubscribe button does the opposite of what you want: it confirms you’re real.
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The best anti-spam software in 2026: an honest comparison
Which anti-spam software is best in 2026? Klar, SpamSieve, Leave Me Alone, Clean Email, SaneBox and MailWasher compared: where each runs, what it costs.
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The best spam filters for Apple Mail in 2026
Six spam filters for Apple Mail compared: the built-in junk filter, Klar, SpamSieve, SaneBox, Clean Email, Leave Me Alone. Where each runs and what it costs.
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Where does your spam filter read your mail?
Every spam filter reads your mail somewhere. Four tiers: your provider’s cloud, a vendor’s cloud, a vendor cloud without third-party AI, or your own machine.
The on-device option
Free, private, in Apple Mail.
