SpamSieve is a universal binary that runs natively on both PowerPC- and Intel-based Macs using Mac OS X 10.4 through 10.6. It is designed to work with the following e-mail programs:
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 iPhone OS, but you can use it together with your Mac to filter mail on your iPhone, iPad, or iPod touch. This is described in the iPhone Spam Filtering section.
If you use AOL, turn off AOL’s spam filter, follow these instructions to setup Apple Mail for use with AOL and then follow the normal SpamSieve setup instructions in the Setting up Apple Mail section.
If you use Gmail, follow these instructions to setup Apple Mail for use with Gmail and then follow the normal SpamSieve setup instructions in the Setting up Apple Mail section.
If you use Yahoo Mail, you need to upgrade to Yahoo Mail Plus in order to access your account outside of a Web browser. Then setup Apple Mail to access your Yahoo account and follow the normal SpamSieve setup instructions in the Setting up Apple Mail section.