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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

"I would rate Mimecast Email Security a nine out of ten."
"The security is pretty good, and that's why we're going to upgrade to an even more advanced package. We used it when we had a power issue, and it works. It has been pretty reliable, and the support has been quite good."
"The solution is pretty straightforward to use and easy to set up."
"It has all the features required for distribution, such as the ability to mail."
"Email security is the most valuable feature of the solution."
"We're now certain business-critical mail is perfectly protected in multiple ways."
"In terms of efficacy, Proofpoint is better than Mimecast, though it's a little difficult to manage."
"The solution is scalable."
"I like that it's simple and easy to configure, deploy, and manage. The reporting function has all the features we're looking for, and we are fine with that."
"The anti-malware and spam features are valuable."
"The solution is stable and the performance is good."
"It has very good capabilities for managing malware."
"Symantec Messaging Gateway has a huge knowledge base about phishing, spamming, spoofing, etc."
"Symantec’s spyware and malware signature database is very good compared to other products."
"The feature that I like the best is the fingerprinting concept."
"Messaging Gateway is stable."
 

Cons

"They should improve the cookies management feature."
"The solution should include more AI features instead of Mimecast's more general static configuration tooling."
"Many of our users complain that the system is blocking too many attachments. It's a good practice from a security perspective, but our users think Mimecast is doing too much. It might be something we'll have to adjust."
"The attachment scanning feature doesn't work properly."
"Mimecast need to ensure that the body text format is correctly handled and that images are properly embedded in the body text."
"Lately, Mimecast's outbound mail servers have been regularly blocklisted by spam filters. That didn't happen a few years back, but it seems to be a more frequent problem these days. When a server is blocklisted, it means all of my outgoing mail ends up in the recipient's junk mail. That affects my reputation and business confidence."
"Their support should be improved. They are notorious for sending you to knowledge-based articles rather than actually talking to you, but that is, unfortunately, kind of becoming a trend with everything. In terms of features, I haven't had any complaints. However, I don't like the fact they moved to a paid training subscription model. They used to have a lot of free webinars for training, but they have started to charge for them in the past year."
"The reaction time between a new threat being identified and Mimecast picking it up needs to be narrowed a bit."
"We've had issues in the past where the user finds spam, and Symantec does not recognize it as spam."
"The solution takes up a lot of memory."
"In a later release, it would be nice if the messaging gateway supported the cluster feature."
"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."
"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."
"The documentation could have more detailed examples of how to use the product in various situations. As more companies shift to the cloud, they could better integrate the on-prem and cloud versions through an on-prem client."
"The product must improve the user dashboards."
"The solution interface is from 2003 and is outdated. Symantec Messaging Gateway needs to update the interface."
 

Pricing and Cost Advice

"It is a bit expensive."
"The product has good pricing in terms of return on investment."
"The product price is moderate. I rate the pricing a five out of ten."
"Compared to the other solutions in the market, Mimecast Email Security with Targeted Threat Protection's pricing is fine."
"The customers can select the license packages as per their requirements."
"It's an expensive solution."
"I'm always going to say the price needs to be lower, but it's reasonable."
"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."
"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."
"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."
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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: February 2026.
882,744 professionals have used our research since 2012.