To check the status of the user mailbox, please follow the steps below.
- Login to https://admin.microsoft.com/
- Now go to Users >> Active Users.
- Search for the user in the active users list.
- Then, navigate to the Mail section to check the status of the active users in the mailbox. (Refer the screenshot below)
In case if you face any issues please feel free to contact us at firstname.lastname@example.org