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Mimecast Advanced Email Security vs Symantec Messaging Gateway comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jun 2, 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 Advanced Email Sec...
Ranking in Secure Email Gateway (SEG)
3rd
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
44
Ranking in other categories
Email Archiving (2nd), Email Security (4th), 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 August 2026, in the Secure Email Gateway (SEG) category, the mindshare of Mimecast Advanced Email Security is 14.6%, up from 12.6% compared to the previous year. The mindshare of Symantec Messaging Gateway is 2.8%, up from 2.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Mindshare Distribution
ProductMindshare (%)
Mimecast Advanced Email Security14.6%
Symantec Messaging Gateway2.8%
Other82.6%
Secure Email Gateway (SEG)
 

Featured Reviews

Avinash Mishra - PeerSpot reviewer
Manager - EUC at Finthrive
Advanced email filtering has blocked massive spam volumes and prevents unauthorized data leaks
Improvements for Mimecast Advanced Email Security include enhancing the user interface and accessibility, particularly regarding admin capabilities to add or modify user accounts. Streamlining this could improve overall usability and security management for users. Reporting is another area needing improvement in Mimecast Advanced Email Security, as the reports provided are not very easy to decipher. With artificial intelligence being integrated into various tools including Mimecast Advanced Email Security, I believe there is potential to enhance functionality, enabling users to ask specific questions and retrieve concise answers instead of overwhelming data. I choose a nine for Mimecast Advanced Email Security because improvements such as better user interface and artificial intelligence integration features would greatly enhance its usability. While no tool is perfect, these adjustments could greatly elevate Mimecast Advanced Email Security's capabilities.
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 security on offer is very good."
"The reviewer gave Mimecast Email Security a rating of 10 out of 10."
"The initial setup is very straightforward."
"The piece that is most valuable from the Mimecast standpoint will be the sandboxing feature."
"The initial setup is easy."
"We like the content filtering and secure messaging features."
"My advice for others looking into using Mimecast Advanced Email Security is that they can strengthen their security very well if they choose to go with it."
"Its administration console is very easy to use. The administration console is absolutely important because you interact with the platform through it."
"Symantec Messaging Gateway is stable and scalable."
"Symantec’s spyware and malware signature database is very good compared to other products."
"I've been using Messaging Gateway for ten years."
"The solution is "set and forget". You pay for it and everything is done for you."
"Since Symantec Messaging Gateway is a Linux-based solution it is stable."
"We use the solution for its advanced virus protection, phishing and other features."
"Symantec Messaging Gateway has a good GUI, and it is very powerful in detecting viruses and spam."
"Symantec is a secure product."
 

Cons

"Their support should be improved. They are notorious for sending you to knowledge-based articles rather than actually talking to you about the problem you're reporting."
"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."
"The price could be better, it should be reduced."
"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."
"As for areas for improvement within Mimecast Web Security, I believe there is quite a lot that can be improved."
"Its pricing can be improved. It is a bit expensive."
"The differentiation between bulk spam mail and campaign-related mail could be improved."
"This solution can be frustrating. It blocks many things that should be going through."
"Where it is not available, as is the case with unstructured data, this product fails miserably."
"The solution takes up a lot of memory."
"In a later release, it would be nice if the messaging gateway supported the cluster feature."
"They really need to create a good package that competes with Microsoft."
"It could be more scalable."
"The biggest problem is it's an on-prem product and we're trying to get out of having equipment in data centers."
"Messaging Gateway's advanced malware detection could be improved."
"If the customer has to think about budget and solutions to reduce IT cost, they should get away from Symantec and try using Microsoft."
 

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."
"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 licensing costs are per-user for the product that you get with them."
"The price of Mimecast Mailbox Continuity is expensive."
"The product has good pricing in terms of return on investment."
"For what it is, the product is overpriced."
"It is a bit expensive."
"I'm always going to say the price needs to be lower, but it's reasonable."
"For 150 users, we pay INR 1,60,000."
"Symantec Messaging Gateway’s pricing is very cheap."
"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."
"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."
"A subscription for technical support costs extra."
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Top Industries

By visitors reading reviews
Computer Software Company
10%
Financial Services Firm
9%
Outsourcing Company
9%
Construction Company
8%
Construction Company
16%
Financial Services Firm
16%
Outsourcing Company
14%
Marketing Services Firm
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise12
Large Enterprise20
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise1
Large Enterprise9
 

Questions from the Community

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...
Ask a question
Earn 20 points
 

Also Known As

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

Overview

 

Sample Customers

Hewlett-Packard Company (HP), Cushman and Wakefield, PIB Group, Swissport
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 Advanced Email Security vs. Symantec Messaging Gateway and other solutions. Updated: August 2026.
911,549 professionals have used our research since 2012.