The spam filter you want if you're on a Mac. Happy to have been a beta tester since day one, and it just keeps getting better. Michael has taken it above and beyond with version 3.

SpamSieve 3.0.2 improves support for Apple Mail on macOS 14 Sonoma by making filtering much faster and by removing the mailbox size limit. Other improvements include Log window sorting, better blocklist/allowlist auto-training, and various bug fixes: c-command.com/blog/2023/11/1…

Get #BlackFriday deals on SpamSieve, EagleFiler (info organizer/mail and web archiver), and DropDMG (.dmg files). We don’t offer discounts very often, so this is your chance to save on our Mac apps. c-command.com/store/sale

Last chance for great deals on our Mac apps: @SpamSieve, @EagleFiler (info organizer/mail archiver), and @DropDMG (.dmg files) at our #CyberMonday sale. c-command.com/store/sale

SpamSieve 3.0.3 makes filtering with Apple Mail on macOS 14 Sonoma more reliable and responsive. It also includes various bug fixes and documentation updates. c-command.com/blog/2023/12/2…

Thanks to Howard Oakley, Eclectic Light Co for a great review of SpamSieve 3 in Mac|Life magazine: c-command.com/spamsieve/press

SpamSieve 3.0.4 improves the reliability and responsiveness of filtering with Apple Mail. It also improves training, Microsoft Outlook support, handling of damaged databases, and includes lots of other bug fixes and documentation updates. c-command.com/blog/2024/05/1…

SpamSieve 3.0.5 improves the reliability and responsiveness of filtering with Apple Mail and Outlook. It also includes various user interface enhancements, bug fixes, and documentation updates. c-command.com/blog/2024/07/0…

My computer with SpamSieve (c-command.com/spamsieve/) went down last night thanks to local construction chaos. So I had to sort an extra 63 spam messages this morning. Failure reminds you of the importance of great tools! Michael Tsai

SpamSieve 3.1 improves the mail filtering accuracy and includes various user interface and robustness enhancements, bug fixes, and documentation updates: c-command.com/blog/2024/11/2…

If you run a Mac, you need SpamSieve, no question. Been blessed to have been a tester from the beginning, and it has made the email life so, so much better.

Get #BlackFriday deals on @SpamSieve (Mac e-mail filtering), @EagleFiler (file/notes organizer and mail/web archiver), and @DropDMG (disk images and archives). c-command.com/store/sale

SpamSieve 3.1.1 improves the mail filtering accuracy, makes it easier to access the setup instructions and to train messages from within your mail client, speeds up table view operations throughout the app, and more: c-command.com/blog/2025/02/0…

SpamSieve 3.1.2 improves the mail filtering accuracy, the Log window, and the documentation. It also improves resiliency to crashes and fixes some bugs: c-command.com/blog/2025/03/3…

SpamSieve 3.1.3 improves the mail filtering accuracy, works with the new MailMaven e-mail client, improves the notification features and support for server junk filters, and includes various optimizations, bug fixes, and documentation improvements: c-command.com/blog/2025/05/2…

SpamSieve 3.2 has been updated for macOS Tahoe 26 and also adds more accurate spam filtering, remote training from iOS devices and unsupported Mac e-mail clients such as forthcoming versions of Microsoft Outlook, and lots more enhancements and fixes: c-command.com/blog/2025/09/1…

SpamSieve 3.2.1 fixes some issues with POP accounts in Apple Mail, amongst other improvements for macOS Tahoe 26 and general fixes and enhancements for all macOS versions: c-command.com/blog/2025/10/0…

SpamSieve 3.2.2 improves SpamSieve’s filtering accuracy, adds more rule information in the Log, improves compatibility with macOS Tahoe 26, and includes various other optimizations and bug fixes: c-command.com/blog/2025/11/1…

Get #BlackFriday deals on @SpamSieve (Mac e-mail filtering), @EagleFiler (file/notes organizer and mail/web archiver), and @DropDMG (disk images and archives). c-command.com/store/sale