Michael Tsai’s must-have shareware program, SpamSieve, has just been updated to version 2.8.4. The new version, a 7.8 megabyte download, makes the following fixes and improvements:

- SpamSieve now integrates with Microsoft Outlook 2011. For more information, see the Setting up Outlook section of the manual.

- SpamSieve now integrates with Postbox, an enhanced version of Thunderbird. For more information, see the Setting up Postbox section of the manual.

- Adjusted SpamSieve’s tokenizer to improve the filtering accuracy.

- The Train as Good command in Apple Mail is better at moving messages in the spam folder or trash back to the inbox.

- Fixed a regression where the whitelist and blocklist windows wouldn’t open when running SpamSieve under certain localizations.

- Improved the localizations.

SpamSieve is available for a US$30 registration fee and requires Mac OS X 10.4 or later to run. The new version can either be downloaded directly from the web site or brought up to the current version via the program’s built-in update feature.