- Requires: Mac OS X 10.6, 10.7, 10.8, 10.9, 10.10, 10.11, or macOS 10.12 and an e-mail client (older versions available).
- Recommended: IMAP or Exchange mail account (for iPhone/iPad spam filtering).
- See what’s new in version 2.9.25 (September 19, 2016).
|“SpamSieve is just incredibly, amazingly accurate; my In box is clean, baby, clean!”
David Pogue, The New York Times
|“Best email spam filter for the Mac, period.”
John Gruber, Daring Fireball
|SpamSieve gives you back your inbox, using powerful Bayesian spam filtering to provide amazing accuracy that’s constantly improving.||It’s quick and easy to control SpamSieve from within Apple Mail (Mail.app), Airmail, Entourage, MailMate, Mailsmith, Outlook, Postbox, PowerMail, and more.|
|SpamSieve learns and adapts to your mail, so it’s able to block nearly all the junk—without putting good messages in the spam mailbox.||Turn off new-mail notification in your e-mail client and let SpamSieve notify you only when you receive new non-spam messages.|
|Automatically maintains a whitelist to guarantee that messages from previous correspondents are never marked as spam.||Integrates with your contacts so that messages from friends and colleagues always make it through to your inbox.|
|Maintains a blocklist so that it can instantly stop the spam messages sent from particular addresses and catch 100% of them.||Customize the whitelist and blocklist by adding your own rules. Use a variety of criteria, e.g. regular expressions, to match different message parts.|
|Spammers encode and obfuscate their messages and use phishing tactics, but SpamSieve can decode the messages to discern their true nature.||SpamSieve looks inside attached images and documents to detect spammy content even when the message itself is virtually empty.|
|Colors show how spammy each message is, so you can quickly focus on the borderline ones if you want to check SpamSieve’s work.||SpamSieve keeps track of how accurate it is, how many good and spam messages you receive, and how these numbers change over time.|
|The log lets you see everything that SpamSieve did, and why, so that you can tweak the settings if necessary.||SpamSieve running on your Mac can keep the spam off your iPhone/iPad, and you can even train SpamSieve from afar.|