This option makes SpamSieve show the number of new good messages in its Dock icon. If there are no new good messages or if SpamSieve or the mail program is frontmost, SpamSieve will not show any number (rather than showing zero). Clicking the Dock icon, activating your e-mail program, or training SpamSieve with a message will reset the count.
The slider lets you control the size of the number in the Dock icon.
If you’re using DragThing 5.3 or later, SpamSieve can show the message count in its tile in DragThing’s process dock. With DragThing 5.3 and 5.3.1, you will need to install a file to enable this integration. Choose Show Other Scripts from the SpamSieve menu, and then open the For DragThing Users folder. In a separate window, locate the DragThing application. Control-click on the DragThing icon and choose Show Package Contents. Open the Contents folder and then the Resources folder. Control-click on the DragThing Helper file and choose Show Package Contents. Open the Contents folder and then the Resources folder. Drag the mtSS.scpt file from the For DragThing Users window into the Scripts folder in the Resources window.