Brother MFC-8820DN - Manual (Page 241)

15 - 4 USING THE WINDOWS ® -BASED BROTHER SMARTUI CONTROL CENTER
Auto Configuration
During the installation process the Control Center checks your
system to determine the default applications for E-mail, word
processing and graphics viewer/editor.
For example, if you are using Outlook as your default E-mail
application, the Control Center automatically will create a link and a
scanning application button for Outlook.
You can change the default application by right-clicking on any of the
scan buttons in the Control Center and then clicking Configuration.
Select the Configuration tab and from the Application pull down
menu select a different application. For example, you can change the
E-mail scan button from Outlook Express to Outlook by changing the
application that is listed.