This article explains what you need to provide before emails can be synced. Once you have the required details, you must raise a case with the Support Team so the setup can be completed.
Set Up Email Sync Requirements
Create an API Developer account for the email address [email protected].
Confirm your SchoolPost Domain.
Raise a case with the Support Team, then reference the title of this article.
📌Note: Make sure you have both the API Developer account and your SchoolPost Domain ready before you raise the case.