Version 2.9.42 of SpamSieve is now available.

Save time by adding powerful spam filtering to the e-mail client on your Mac. SpamSieve gives you back your inbox, using Bayesian spam filtering to provide amazing accuracy that’s constantly improving. 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. It’s quick and easy to control SpamSieve from within Apple Mail, Airmail, Entourage, MailMate, Mailsmith, Outlook, Postbox 5, PowerMail, and more.

SpamSieve running on your Mac can keep the spam off your iPhone/iPad, and you can even train SpamSieve from your iOS device.

SpamSieve protects your privacy. It does not need access to your mail account login and does not transmit your mail data anywhere. All the processing is done on your Mac.

This is a free update that includes the following changes:

• SpamSieve now runs natively on Apple Silicon Macs.
• Worked around a macOS bug that could block communication between Apple Mail or Outlook and SpamSieve on Apple Silicon Macs. This could cause training not to work and/or messages to accumulate in the InboxSpamSieve folder.
• SpamSieve now tries to detect if Apple Mail will incorrectly report an “Incompatible Plug-ins Disabled” error on macOS 11 (e.g. when the installed version of the plug-in actually is compatible) and explains how to fix this.
• Improved the following sections of the manual:
  • If SpamSieve Tells You the Apple Mail Plug-In Isn’t Loading, But It Is
  • If the Apple Mail Plug-In Doesn’t Appear in the List or Doesn’t Stay Enabled
  • Resetting Mail’s Private Plug-Ins Folder
  • Security & Privacy Access
• SpamSieve now maintains its own error log files, so you can still access information for troubleshooting when the macOS system log isn’t working properly.
• Improved the installer and diagnostic report to better work around problems with Apple Mail’s plug-ins folder on macOS 11.
• The software updater reports a more useful error message if you try to update SpamSieve while running it from the disk image. This should prevent confusion where you continue running an old version despite telling it to update.
• The Apple Mail - Move If Spam script now lets you set a server spam mailbox name via the user defaults without having to edit the script.

SpamSieve 2.9.42 works with macOS 10.9 through 11.1 and requires an e-mail client. Older SpamSieve versions are available for older versions of macOS. In-depth information about SpamSieve is available in the manual.

If you enjoy using SpamSieve, please take a moment to review it on Product Hunt or MacUpdate or to mention it on Twitter, Facebook, or your own site. We’d really appreciate it.