There are two ways to update to the latest version of SpamSieve:
Automatic Updating
Manual Updating
Go to the SpamSieve Web site and click the Download (Free Trial) button.
Quit SpamSieve and your mail program.
Replace the old SpamSieve application file with the new one. That is, if SpamSieve is installed in the Applications folder, drag the new SpamSieve application icon into the Applications folder and click Replace when the Finder asks if you want to overwrite the old version. (If macOS won’t launch the app because it says that it’s damaged, please see the Download Fixer page.)
Note: If you get an error saying that the file is locked or you do not have sufficient privileges, drag the old SpamSieve to the trash and empty it, and then drag the new one into the Applications folder.
Launch SpamSieve and your mail program.
Updating From SpamSieve 2 to SpamSieve 3
First, download and install the SpamSieve 3 app, as described above.
If you had purchased SpamSieve 2, SpamSieve 3 will start out in trial mode, and you can click the Check Upgrade Options button in the Purchase window to take you to the store and automatically apply the upgrade discount.
The first time you launch SpamSieve 3, it will offer to import all your SpamSieve 2 data:
This may take a few minutes depending on how many messages you had trained and filtered:
Repeated Update Prompts
If SpamSieve keeps telling you that a new version is available, even after you’ve updated, you may still have the old version somewhere on your Mac. There should only be one copy of SpamSieve installed, and it should be stored directly in your Applications folder. If you see a window saying that you need to update SpamSieve, you can Command-click on the SpamSieve icon in the Dock. This will reveal the location of the SpamSieve.app file in the Finder so that you can see where the old version is and delete it (after quitting SpamSieve).