You can include email addresses to receive notifications when a donor contributes through a specific donation campaign.  You are also able to set the amount over which the donation should be equal to or greater than, in order for the notification to send. To setup the Large Gift Notifications: 
  1. Navigate to Fundraising > Donation Management
  2. Click Edit next to the Donation Campaign name
  3. Click Specify Groups and Notifications
  4. Under step 2. Large Gifts, mark the checkbox next to "Yes, gifts greater than or equal to the amount specified below are to be treated uniquely."
  5. In the box under Large gift amount, enter in the amount
  6. Under Large gift notification list, add email addresses to receive the notifications
  7. Click Save