Version 3.2 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 Junk mailbox. It’s quick and easy to control SpamSieve from within Apple Mail, Outlook, Airmail, MailMate, MailMaven, GyazMail, 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.

SpamSieve 3.2 is a free update for those who have already purchased the SpamSieve 3.0 upgrade. If you’re using SpamSieve 2 and haven’t upgraded yet, the easiest way is to first let SpamSieve install the new version. At launch, it will show the Purchase window, and you can click the Check Upgrade Options button to get the upgrade discount without having to enter your old serial number.

The changes in this version are:

Highlights

• SpamSieve 3.1.3 was already compatible with macOS Tahoe 26, but with version 3.2 we’ve made further updates and optimizations for it. Although the Tahoe beta went smoothly, and the Tahoe release worked as expected for most of the SpamSieve customers who have already updated, a very small percentage of users (all of them using POP mail accounts) have reported their spam filtering being interrupted due to errors from Apple Mail. (On these Macs, when SpamSieve asks Mail to move a message to the Junk mailbox, it doesn’t do so.) These seem to be isolated cases, but we wanted to make you aware of this situation as you decide when to update to Tahoe. As we investigate further, we’ll make a bug report to Apple, try to develop a workaround, and post updated information on the support page.
• Made various changes to improve SpamSieve’s filtering accuracy.
• There is now built-in support for training SpamSieve while away from your Mac or when using a Mac e-mail client that SpamSieve doesn’t integrate with directly. If you go to the Settings ‣ Apple Mail ‣ Training window and select Train messages in TrainSpam and TrainGood, you can train SpamSieve from an iPhone (or other device) by moving messages into the special TrainSpam or TrainGood mailbox. Simply deleting spam messages to get them out of your inbox would lead SpamSieve to think they were good, reducing its filtering accuracy. We used to recommend training spam messages in the inbox when you got back to your Mac. Now you can train SpamSieve remotely, which immediately gets the spams out of view and improves SpamSieve’s filtering of future messages. There’s more information about how this works in the Drone Setup and Remote Training section of the manual. If you were using the old remote training AppleScript and rule, you can uninstall them as described in the Legacy AppleScript section.
• On November 1, 2025, Microsoft will remove AppleScript support from Outlook. Until this is restored (currently scheduled for December 2025), SpamSieve will not be able to directly work with Outlook. However, you will still be able to use SpamSieve to filter your mail (via Apple Mail) and you’ll still be able to train it from Outlook (via the remote training mentioned above). There’s a lot more information about this in the End of Support for Legacy Outlook section of the manual. The Settings ‣ Outlook ‣ Setup window now shows a link to this help page if Outlook filtering is enabled.

macOS Tahoe 26

• Updated SpamSieve’s application icon for macOS Tahoe 26 and the new Liquid Glass design language. It no longer appears in “squircle jail” and now adapts as you change the macOS appearance to use the Dark, Clear, and Tinted icon styles.
• The top-left corner of SpamSieve’s Dock icon used to change to show the current training or filtering status. Badging the icon in this way doesn’t work properly with the new Liquid Glass appearance themes, so SpamSieve now shows these status changes as glyphs using the system standard red badge in the top-right corner of the Dock icon. (These will only be shown if System Settings ‣ Notification ‣ SpamSieve ‣ Badge application icon is checked.)
• Added images for each menu item.
• Updated the window toolbar appearance.
• The Uncertain spam messages and Spam-catching strategy sliders now show their neutral values and have adjusted tint prominence.
• Text fields now disallow Security Code AutoFill since it’s not relevant.

Corpus, Blocklist, Allowlist, and Log

• Selecting or deleting large numbers of rules or log entries is faster and uses much less memory.
• The Corpus and Log windows now show the message’s From address in addition to the sender’s name. This should make it easier to tell at a glance which messages are spam.
• Dates shown in the Corpus, Blocklist, Allowlist, and Log windows now have tooltips to show the full day of the week and time. The From and Subject columns also have tooltips in case there isn’t enough space to fit the whole text.
• Auto-training entries in the Log now show why the message was originally predicted the way it was.
• Improved the sizing and toolbar overflow behavior of search fields throughout the app.
• Improved the description of rule changes when copying from the Log window to the clipboard.
• Fixed a bug where a rule matching the sender’s name might not match a message if the name used an Asian character that had a different Unicode width.
• SpamSieve reports more error information when there’s a problem opening a database file.

Settings

• Added the Where is SpamSieve’s menu bar icon? section to the manual and a link from the Settings ‣ Advanced window.
• The Quit when mail client quits feature now works with MailMaven.
• Made a change to try to prevent the Settings window from opening as a result of two processes launching SpamSieve at the same time.

Apple Mail

• When you uninstall SpamSieve’s Mail plug-in, it no longer auto-quits as a result of Mail quitting.
• Added a workaround to prevent reprocessing messages if Mail incorrectly reported their metadata.
• Improved the error reporting when Mail is bogged down and SpamSieve is trying to read the list of inboxes.
• The Apple Mail - Rescue Good Messages script tries to work around a Mail bug that could lead to messages being moved to the trash but still marked as unread.

Documentation

• Updated the documentation and screenshots for macOS Tahoe 26.
• Improved the following sections of the manual:
  • Does SpamSieve stop Web bugs?
  • If Apple Mail Is Running Slowly
  • Mark it as read
  • Requirements
  • Setting Up a MailMate Drone
  • Setting Up Outlook (Large Inboxes)
  • Setting Up Outlook
  • Show menu bar icon
  • Turning Off New Outlook
  • Why is SpamSieve not catching my spam?

General

• Updated the Dutch, French, German, Japanese, Korean, and Spanish localizations.
• Worked around some Swift Concurrency changes in Xcode 26.
• Work around a bug in Xcode 26 that could cause a crash at launch on macOS 12 when running on an Intel Mac.
• Work around a bug in Xcode 26 that could cause a crash at launch on macOS 10.13.

AppleScript

• The AppleScript file property of the corpus now returns the URL of the whole corpus package (as has been documented) rather than of the main words database file.

SpamSieve 3.2 works with macOS 10.13 through macOS Tahoe 26 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.

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