1. Go to Setup > Site Options.
  2. Select Go next to the drop down to view all site options.
  3. Search for NOTIF_FROM: and/or NOTIF_FROM_NAME
  4. Make changes to the value and save your changes. Note: This change is site wide and will effect all TeamRaisers.
If you cannot see the NOTIF_FROM: or NOTIF_FROM_NAME site option, please contact Luminate Support to make this change for you. 

Note: The email address can also be individually set for each TeamRaiser following these instructions.