A:
If you longer want to use a Notifier, you can simply select a different one from your Notifier list. If, however, you wish to remove the Notifier completely from your computer, simply do the following:
In the IncrediMail main window, click 'Notifier' (marked in red).
At this point, the 'Select Notifier' dialog opens. Right-click the Notifier you wish to delete (marked in red), select 'Delete' (marked in blue) and confirm the deletion.