VB ESA - M365 comparative testing is a regular independent comparison of email security solutions that supplement Microsoft 365’s native security.
VB ESA - M365 tests are designed to quantify the changes in email filtering performance that result from deploying tested solutions alongside Microsoft 365, and to compare performance metrics among the evaluated products.
VB ESA - M365 email security comparative review
Inaugural VB ESA - M365 comparative test
covering the period from 2 to 18 May 2026.
Read online or take the PDF on the go
The VB ESA - M365 tests make use of three live global spam feeds, provided by Project Honey Pot, Abusix and MX Mail Data.
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