In your account's Organization Settings, you have the ability to customize the Receipts and Letters that are sent out to your Contacts, at an organization level. We talk about this in great detail in our Setting up your Receipts - Acknowledgement Letters article.
We've introduced a brand new feature that will allow you to customize the Receipts and Letters for your Donation or Revenue payments, at a Campaign or Impact Area level.
Receipts and Letters - Campaign and Impact Area Customization Training Video
Learn exactly how this customization works by watching this video.
Want to know more? Check out our full article here.