Try our new research platform with insights from 80,000+ expert users

Symantec Messaging Gateway vs Tessian Guardian 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

Symantec Messaging Gateway
Average Rating
8.2
Reviews Sentiment
6.8
Number of Reviews
20
Ranking in other categories
Secure Email Gateway (SEG) (9th)
Tessian Guardian
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
Email Security (80th), Data Loss Prevention (DLP) (63rd)
 

Mindshare comparison

While both are Messaging and Collaboration solutions, they serve different purposes. Symantec Messaging Gateway is designed for Secure Email Gateway (SEG) and holds a mindshare of 2.6%, up 2.5% compared to last year.
Tessian Guardian, on the other hand, focuses on Data Loss Prevention (DLP), holds 0.2% mindshare, up 0.2% since last year.
Secure Email Gateway (SEG) Market Share Distribution
ProductMarket Share (%)
Symantec Messaging Gateway2.6%
Microsoft Defender for Office 36527.6%
Proofpoint Email Protection21.0%
Other48.8%
Secure Email Gateway (SEG)
Data Loss Prevention (DLP) Market Share Distribution
ProductMarket Share (%)
Tessian Guardian0.2%
Microsoft Purview Data Loss Prevention12.6%
Forcepoint Data Loss Prevention8.5%
Other78.7%
Data Loss Prevention (DLP)
 

Featured Reviews

Dennis O'Reilly - PeerSpot reviewer
The product provides good content filtering options, but the false positive submissions must be improved
The tool is very stable. I rate the stability a seven out of ten. It's an on-premise application that runs on a virtual machine. It has dependencies on the hypervisor host that we're running it on. If it's not configured, the application can be influenced by it. Sometimes, there is a service stop error while the service is still running. Sometimes, the service just stops. Some policies do not act the way that we intend them to respond.
Use Tessian Guardian?
Share your opinion
report
Use our free recommendation engine to learn which Secure Email Gateway (SEG) solutions are best for your needs.
871,408 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Financial Services Firm
21%
Computer Software Company
16%
Government
7%
Manufacturing Company
7%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise1
Large Enterprise8
No data available
 

Questions from the Community

What needs improvement with Symantec Messaging Gateway?
The solution takes up a lot of memory. The system becomes slow. The performance must be improved.
What is your primary use case for Symantec Messaging Gateway?
We use the solution to secure our data and emails.
Ask a question
Earn 20 points
 

Also Known As

Symantec.cloud, Symantec Email Security.cloud
No data available
 

Overview

 

Sample Customers

Doric, Joblink Plus, Our Lady of Mercy College, Parramatta, PPB Advisory, Slater & Gordon Lawyers, Sydney Adventist Hospital Ltd.
Affirm, Choate, BMA, Evercore, Gubra, Accel, Fieldfisher, Clearwater, Man Group plc, Graphcore, Investec, Rightmove
Find out what your peers are saying about Microsoft, Abnormal AI, Proofpoint and others in Secure Email Gateway (SEG). Updated: September 2025.
871,408 professionals have used our research since 2012.