Brother DCP-8020 - Manual (Page 186)

10 - 31 USING THE WINDOWS ® -BASED BROTHER SMARTUI CONTROL CENTER (FOR WINDOWS ® XP)
E-mail:
Select the destination E-mail application program from the pull down
list.
Click on the Link Preferences button to configure the Send To
E-mail options. You can select the File type and Quick Send E-mail
address list.