I wish to find the best way (and alternative ways) to find out which external parties send the most email to users in my tenant.
I cannot seem to find this straightforward and simple information on the Admin Center!
For example, I get ten times more email from the job boards I am registered on, than I do from Ocado.
Hopefully, someone here knows.
Hey @Chris Morley
Best I can find is in the Office 365 admin center, open up Office 365 Security and Compliance center
then go to mail flow > dashboard and click on the mailflow map
On the right click on the 'view details button' - it'll show a table of which direction and which domain email was sent to summarized. For example:
You can adjust the filter for which day(s) this applies to. You can also have the report emailed to you.
For the example above, the tenant is pure 365 - no hybrid business or funky connectors, which might complicate the report. Hopefully this can be a useful starting point.