As an Admin, you can update student information from the Admin Dashboard.
How to add an email address to an existing account:
1. Sign in as an Admin at https://app.seesaw.me
2. Click on the Student Tab
3. Search for the student by name of Student ID
4. Click Edit Student
5. Click Email
6. Enter the student's email address and click the back arrow to save
If the student's email already exists in Seesaw you will be prompted to merge the accounts. Please make sure that this is the correct email, as account merging is permanent.