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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)
3rd
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
39
Ranking in other categories
Email Archiving (2nd), Secure Web Gateways (SWG) (19th), Office 365 Protection (2nd)
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 March 2026, in the Secure Email Gateway (SEG) category, the mindshare of Mimecast Email and Collaboration Threat Protection is 17.1%, up from 11.1% compared to the previous year. The mindshare of Symantec Messaging Gateway is 2.3%, down from 2.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Mindshare Distribution
ProductMindshare (%)
Mimecast Email and Collaboration Threat Protection17.1%
Symantec Messaging Gateway2.3%
Other80.6%
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

"The initial setup is very straightforward."
"The solution offers good technical support."
"Mimecast has some good support services in place."
"The most valuable feature is the DMARC Analyzer."
"I recommend Mimecast based on customer requirements and budget."
"It has all the features required for distribution, such as the ability to mail."
"Its administration console is very easy to use. The administration console is absolutely important because you interact with the platform through it."
"In terms of efficacy, Proofpoint is better than Mimecast, though it's a little difficult to manage."
"The most valuable features of Symantec Messaging Gateway are advanced content filtering, malware, and antivirus defense."
"The most valuable feature of the solution is the content filtering policies because the solution offers huge options for configuration, such as hardware manipulation, et cetera, and the dictionaries make the work easier."
"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."
"Messaging Gateway is stable."
"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."
"Symantec Messaging Gateway is stable and scalable. Installation is easy, and the deployment and maintenance can be done by one administrative person."
"The anti-malware and spam features are valuable."
"The solution is "set and forget". You pay for it and everything is done for you."
 

Cons

"The solution is very expensive."
"The solution is complex and not easy to use."
"Certainly, the primary area needing improvement is Mimecast's customer support. Our experience as Mimecast customers has been less than satisfactory. Even when raising a priority ticket, the response time is unacceptably long, often taking around five to six hours. This level of service is disappointing. Additionally, there have been recurring service disruptions in the UK region, leading to extended email delays due to various service issues. This year alone, we've encountered such problems on approximately four occasions."
"Mimecast Email Security is somewhat expensive compared to the competition in the Indian market, and the local presence is lacking as they do not have a local representative currently."
"As for areas for improvement within Mimecast Web Security, I believe there is quite a lot that can be improved."
"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."
"I did have a problem with Mimecast. That is why I was looking for an alternative solution because their sender IP address gets poorly rated by Microsoft."
"Mimecast needs to reduce the number of false positive emails; a big pain point for us."
"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."
"The false positive submissions must be improved."
"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."
"It is a nice product but is not user friendly in terms of the graphical interface. It is poor and is not rich in terms of the human interface."
"It could be more scalable."
"This product would benefit from better integration with Symantec Endpoint Protection."
"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."
"In a later release, it would be nice if the messaging gateway supported the cluster feature."
 

Pricing and Cost Advice

"Compared to the other products in the market, it is neither cheap but nor very expensive. I would rate it somewhere in the middle, 5 out of 10."
"The price of Mimecast Mailbox Continuity is expensive."
"The product has good pricing in terms of return on investment."
"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."
"The solution is expensive."
"The licensing costs are per-user for the product that you get with them."
"The customers can select the license packages as per their requirements."
"Compared to the other solutions in the market, Mimecast Email Security with Targeted Threat Protection's pricing is fine."
"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."
"They're a little costly compared to Microsoft."
"It's a bit expensive compared to its competitor Barracuda Email Security Gateway but cheaper than Sophos Email."
"Symantec Messaging Gateway’s pricing is very cheap."
"A subscription for technical support costs extra."
"For 150 users, we pay INR 1,60,000."
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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
9%
Marketing Services Firm
7%
Manufacturing Company
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.
884,192 professionals have used our research since 2012.