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Tessian Defender vs Zero Trust CDR for Mail Microsoft 365 comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Tessian Defender
Ranking in Email Security
60th
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
No ranking in other categories
Zero Trust CDR for Mail Mic...
Ranking in Email Security
69th
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of February 2026, in the Email Security category, the mindshare of Tessian Defender is 0.3%, up from 0.2% compared to the previous year. The mindshare of Zero Trust CDR for Mail Microsoft 365 is 0.2%, up from 0.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Market Share Distribution
ProductMarket Share (%)
Tessian Defender0.3%
Zero Trust CDR for Mail Microsoft 3650.2%
Other99.5%
Email Security
Find out what your peers are saying about Microsoft, Proofpoint, Check Point Software Technologies and others in Email Security. Updated: January 2026.
881,757 professionals have used our research since 2012.
 

Overview

 

Sample Customers

Affirm, Choate, BMA, Evercore, Gubra, Accel, Fieldfisher, Clearwater, Man Group plc, Graphcore, Investec, Rightmove
Information Not Available
Find out what your peers are saying about Microsoft, Proofpoint, Check Point Software Technologies and others in Email Security. Updated: January 2026.
881,757 professionals have used our research since 2012.