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Klar
Klar: AI spam filter for Apple Mail that runs entirely on the local device for privacy.
Klar is an artificial intelligence spam filter designed specifically for Apple Mail. It operates locally on the user machine, ensuring that no email messages ever leave the device. The application uses an XLM-RoBERTa model trained for spam detection, running on the Mac GPU to process messages in milliseconds. It supports iCloud, Gmail, Outlook, Fastmail, and custom IMAP accounts across more than 100 languages. Users can choose from three sensitivity levels and retain control as filtered messages move to the junk folder rather than being deleted.
Klar at a glance
- Best for: Support, Software engineer
- Runs on: macOS
- Pricing: Free plan; Klar Plus Monthly €3.99/month; Klar Plus Yearly €39/year
- Released: October 2026
- Category: AI productivity tool
- Website: klar.im
Key features
- Filters spam on arrival in Apple Mail
- Runs locally on the Mac using Apple Silicon
- Supports over 100 languages automatically
- Provides three sensitivity profiles
- Works with iCloud, Gmail, Outlook, and IMAP
- Operates without requiring an account
Use it for
- Filtering spam and phishing messages in Apple Mail
- Managing incoming newsletters and marketing emails
- Sorting inbox messages privately on device
Alternatives to Klar
- Curier — Keeps all mail data locally on the Mac with no intermediate servers.
- bytemail — Connects directly to email providers without using intermediary servers.
- Clotr — Runs locally with no network or accounts required.
- GmailClass — Classifies inbox emails using custom descriptions and color-coded labels.
- Umbra Mail — It keeps mail private with no tracking and optional local AI.
- Chime — Sorts messages locally on your phone without uploading data to any server.
- PocketWebTools for Mac — Runs local AI models up to 35B parameters fully offline on Apple Silicon Macs.
- Cold Email Killer — Runs securely on Google Apps Script and filters unwanted emails automatically.
- Clutterstrike — Provides immediate validation of suspicious digital communications.
- Hashling — It watches AI agents and files on your Mac, pausing suspicious changes until you approve them with Touch ID.
- Linda — It runs locally on Apple Silicon and asks before any irreversible action.
- AIME — Open-source privacy-focused macOS input method with local data processing and AI features.
All Klar alternatives