2.1   Requirements

SpamSieve is a universal binary that runs natively on both PowerPC- and Intel-based Macs using Mac OS X 10.4–10.5. It is designed to work with the following e-mail programs:

• Apple Mail from Mac OS X 10.4 and later.
• Emailer 2.0v3, previously available from Claris.
• Entourage v.X (2001) and later (Entourage 2004 or 2008 recommended) from Microsoft.
• Eudora 5.x or 6.x (in Sponsored or Paid mode) from Qualcomm. SpamSieve will also work with Eudora 8.0.0b1 (a.k.a. Penelope) if you follow the Thunderbird instructions. It does not work with Eudora 8.0.0b2 or 8.0.0b3.
• GyazMail 1.2.0 and later (1.5.7 recommended).
• Mailsmith 1.5 and later (2.1.5 or 2.2 recommended) from Bare Bones Software.
• Outlook Express 5.0 and later from Microsoft.
• PowerMail 4.0 and later (5.x recommended) from CTM Development.
• Thunderbird 1.5.0.9 or 2.x from Mozilla, and Mac OS X 10.4 or later. SpamSieve does not work with Thunderbird 3 (which is in pre-release).

SpamSieve works roughly the same way with each mail program. If you use multiple mail programs at once, SpamSieve will share its training data and statistics among them. Emailer, Eudora, and Thunderbird provide SpamSieve with access only to parts of each e-mail message, so SpamSieve’s accuracy will be slightly reduced when using these mail programs, although it should still be much better than their built-in spam filters.

SpamSieve does not run on the iPhone, but you can use it together with your Mac to filter your iPhone mail. This is described in the iPhone Spam Filtering section.