Hello there, @KerryFox ...
Sorry to see that your question has been sitting out here without an answer for many months. There is no function of Canvas that I am aware that tells Canvas to display your e-mail address on a page of content. What you could do, though, is create a new page in your sandbox course, add any contact information to that page, and then designate it as the "Home" page for your Canvas course. Here are a handful of Guides that might be of help for you:
- How do I create a new page in a course? - Canvas Community
- How do I set a Front Page in a course? - Canvas Community
- How do I change the Course Home Page? - Canvas Community
I hope this information will be of some help to you. Sing out if you have any other questions for Community members...thanks! Take care...be well.