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Mimecast Email and Collaboration Threat Protection vs Symantec Messaging Gateway comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Feb 11, 2026

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

Mimecast Email and Collabor...
Ranking in Secure Email Gateway (SEG)
4th
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
39
Ranking in other categories
Email Archiving (2nd), Secure Web Gateways (SWG) (20th), Office 365 Protection (3rd)
Symantec Messaging Gateway
Ranking in Secure Email Gateway (SEG)
12th
Average Rating
8.2
Reviews Sentiment
6.8
Number of Reviews
20
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of February 2026, in the Secure Email Gateway (SEG) category, the mindshare of Mimecast Email and Collaboration Threat Protection is 16.6%, up from 11.6% compared to the previous year. The mindshare of Symantec Messaging Gateway is 2.3%, down from 3.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Market Share Distribution
ProductMarket Share (%)
Mimecast Advanced Email Security16.6%
Symantec Messaging Gateway2.3%
Other81.1%
Secure Email Gateway (SEG)
 

Featured Reviews

HS
Email Security Engineer at Logic Infosecurity
Experience high detection and user-friendly policies with reliable email security implementation
The system is not user-friendly because you have to create policies that are mapped in a dictionary. As an IT engineer, I understand how it works, but explaining it to another IT person can be difficult. Having more user-friendly dashboards would improve the work experience. In Mimecast Email Security, checking policies in the dictionary or gateway is very complicated, and not everyone understands this process. If you examine the Check Point portal, it's user-friendly with easily accessible tabs that anyone can explore. With Mimecast Email Security, making changes might impact existing mailboxes. The portal is complicated compared to Check Point's user-friendly interface.
Girish Vijay - PeerSpot reviewer
Deputy Manager IT at Carl Bechem Lubricants India Pvt. Ltd.
A stable and reasonably priced solution that performs well and has a very good malware database
Since Symantec merged with Broadcom, they might have lost some good technical engineers. Maybe that’s the reason why the product is performing poorly. When we have a good marketing and sales team, even though our product cannot perform, we will sell it at a high price because of the buzzwords. However, at the end of the day, the product should perform. Most of the products might not perform. Symantec is a very good product, but the services are basic. I rate the technical features of the product a nine out of ten. However, I would rate the services provided by the solution a six out of ten. Overall, I rate the tool an eight out of ten.

Quotes from Members

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

Pros

"What I like about the integration is that it is directly into Microsoft 365, users can use their Microsoft 365 credentials to log into the portal and access their mail."
"The setup was easy."
"The most valuable feature is the DMARC Analyzer."
"We're now certain business-critical mail is perfectly protected in multiple ways."
"The solution is scalable."
"The piece that is most valuable from the Mimecast standpoint will be the sandboxing feature."
"Mimecast has some good support services in place."
"The platform's most valuable features are journaling and email archiving, effectively stopping phishing attacks."
"Symantec Messaging Gateway is stable and scalable. Installation is easy, and the deployment and maintenance can be done by one administrative person."
"It is a solid and stable product."
"What I like most about Symantec Messaging Gateway is its usability. I also find its interface very friendly. The solution has a very good interface."
"Symantec Messaging Gateway has a good GUI, and it is very powerful in detecting viruses and spam."
"It has very good capabilities for managing malware."
"The most valuable features of Symantec Messaging Gateway are advanced content filtering, malware, and antivirus defense."
"The solution is highly customizable. You can make rules for domains and configure policies for spam or malware. Messaging Gateway is an on-prem solution, so it's useful for companies without a cloud presence."
"Symantec’s spyware and malware signature database is very good compared to other products."
 

Cons

"Mimecast needs to reduce the number of false positive emails; a big pain point for us."
"As for areas for improvement within Mimecast Web Security, I believe there is quite a lot that can be improved."
"Technical support has been slower than it was in the past, likely due to the pandemic."
"The solution's console interface was recently changed for the admins, but the previous one was much better because we could open tabs on it."
"While it's quick and easy, the initial setup could be more user-friendly."
"The solution is complex and not easy to use."
"The system is not user-friendly because you have to create policies that are mapped in a dictionary."
"We have subscribed to an archival service, and yet, when we have to get our data out, we have to pay a fee to get our own data. They charge an extraction fee."
"Symantec Messaging Gateway can improve detection because most of them are false negatives or false positives that we are trying to troubleshoot. Additionally, we are having routing problems and they are somehow connected to DNS issues."
"What needs to be improved in Symantec Messaging Gateway is its local partner support, as it's not as technical. The support my company gets from the partner isn't good. Vendor support is good, but local partner support isn't. I'm happy with Symantec Messaging Gateway as a solution, but the problem is with its partner support. To me, Symantec Messaging Gateway is a complete solution, but it can be very difficult to search the web for resolutions to issues or problems you experience from it. If this could be improved or resolved in the next release of Symantec Messaging Gateway, then that would be good."
"Symantec Messaging Gateway should include better exclusions and exceptions for better administration."
"The product must improve the user dashboards."
"They have updated the version of the Messaging Gateway and the new features they are adding the need to be re-evaluated. They have done some changes on the policy."
"We've had issues in the past where the user finds spam, and Symantec does not recognize it as spam."
"What's lacking when you compare it with Proofpoint and other threat protection solutions is that it does the basic stuff, but we need more advanced threat handling."
"It could be more scalable."
 

Pricing and Cost Advice

"The product has good pricing in terms of return on investment."
"It is a bit expensive."
"Two subscription options are currently offered: monthly and yearly. My suggestion is to opt for the yearly subscription as it can give some discount. The pricing isn't high as other cloud solutions are pricier than Microsoft's offerings."
"Compared to the other solutions in the market, Mimecast Email Security with Targeted Threat Protection's pricing is fine."
"I'm always going to say the price needs to be lower, but it's reasonable."
"The price of Mimecast Mailbox Continuity is expensive."
"It's an expensive solution."
"Its price is in the middle range. It is a structured licensing model where there are various components that you can add or choose to add or not."
"For 150 users, we pay INR 1,60,000."
"It's a bit expensive compared to its competitor Barracuda Email Security Gateway but cheaper than Sophos Email."
"They're a little costly compared to Microsoft."
"A subscription for technical support costs extra."
"Symantec Messaging Gateway’s pricing is very cheap."
"The cost of Symantec Messaging Gateway is too expensive in general. However, the appliance also includes the price of the license in the same bundle."
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Financial Services Firm
8%
Manufacturing Company
6%
Comms Service Provider
5%
Financial Services Firm
18%
Computer Software Company
11%
Manufacturing Company
7%
Marketing Services Firm
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise11
Large Enterprise13
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise1
Large Enterprise8
 

Questions from the Community

What do you like most about Mimecast Email Security with Targeted Threat Protection?
The interface of this solution is very easy to navigate and user-friendly. There is no delivery in email and other communications, making it reliable. The configuration is relatively easy.
What needs improvement with Mimecast Email Security with Targeted Threat Protection?
There is room for improvement since new threats are emerging. Considering the availability of new features would be worthwhile. Mimecast Email Security is somewhat expensive compared to the competi...
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Also Known As

Mimecast Email Security with Targeted Threat Protection, Mimecast Web Security, Mimecast Mailbox Continuity, Mimecast Advanced Email Security
Symantec.cloud, Symantec Email Security.cloud
 

Overview

 

Sample Customers

Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Doric, Joblink Plus, Our Lady of Mercy College, Parramatta, PPB Advisory, Slater & Gordon Lawyers, Sydney Adventist Hospital Ltd.
Find out what your peers are saying about Mimecast Email and Collaboration Threat Protection vs. Symantec Messaging Gateway and other solutions. Updated: December 2025.
882,479 professionals have used our research since 2012.