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SpamSieve is a robust spam filter for major email clients that uses powerful Bayesian spam filtering.

SpamSieve understands what your spam looks like in order to block it all, but also learns what your legitimate messages look like to avoid confusion. SpamSieve only marks spam in your email client so you never lose any mail.

What's New

Version 2.9.26:
  • Works with Apple Mail under macOS 10.12.1. It’s easiest if you update to SpamSieve 2.9.26 before updating to 10.12.1. In any case, if you don’t see the SpamSieve commands in Apple Mail’s Message menu, be sure to choose Install Apple Mail Plug-In from the SpamSieve menu. Otherwise, with the SpamSieve plug-in not installed, Mail will move good messages to the spam


  • OS X 10.6.8 or later
  • Works with:
    • Apple Mail
    • Airmail
    • Emailer
    • Entourage
    • Outlook 2011
    • Outlook Express
    • Eudora 5.2 or 6.x (Sponsored or Paid)
    • MailForge
    • MailMate
    • Mailsmith
    • GyazMail
    • Postbox
    • PowerMail
    • Thunderbird 2

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4.7 116


Current Version (2.x)


Downloads 160,818
Version Downloads 733
License Shareware
Date 18 Oct 2016
Platform Intel 64 / OS X / Intel 32
Price $30.00
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