The Users Logged In per Day report shows you exactly how many users logged in to their Office 365 Mailboxes on any given day.
This report also shows the total number of mailboxes that existed on your Office 365 platform so you can easily compare the number of mailboxes you are paying for with the number of mailboxes being used.
Many customers use this report to track migration progress.
You can use the Chart Selection button at the bottom right hand side of the graph to change the way the data is displayed.
By default, this report will display information for the past 30 days. You can choose a different time period using the Date Selection Tool at the top of the report.
Naturally this report can be customized, filtered and scheduled like all our other reports.