How to ensure a user is logged in with Company Domain email id

[joshi]

We are an online school and we have integrated zoom with our LMS. Everything is set up to work seamlessly. 

1. User is logged in with our company domain 

2. If he is a licensed user, he will be able to start the meeting

3. If not, the bridge screen will be visible. 

Problem Statement: Our teachers sometimes forget to log in using our domain email (joshi@21kschool) or get logged out. We want to ensure they are able to quickly check this. Is there any API we can configure for them to call and check?