M365 Email Activity Report

This report produces an output of the email usage for all of the user mailboxes inside your Microsoft 365 Tenant.

It shows the 7 day, 30 day, 90 day and 180 counts for each users mailbox, alongside a summary of the same totals for the domains as a whole.

Very useful when determining if users mailboxes or domains in the tenant are actually in use.

By utilizing the Microsoft Graph API, the connection to the tenant is secure and also very fast.