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Mimecast Advanced Email Security vs Sangfor Internet Access Gateway (IAG) 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...
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
48
Ranking in other categories
Email Archiving (1st), Email Security (4th), Office 365 Protection (2nd), Secure Email Gateway (SEG) (3rd)
Sangfor Internet Access Gat...
Average Rating
8.0
Reviews Sentiment
7.3
Number of Reviews
3
Ranking in other categories
Secure Web Gateways (SWG) (30th)
 

Mindshare comparison

Mimecast Advanced Email Security and Sangfor Internet Access Gateway (IAG) aren’t in the same category and serve different purposes. Mimecast Advanced Email Security is designed for Secure Email Gateway (SEG) and holds a mindshare of 14.1%, up 12.7% compared to last year.
Sangfor Internet Access Gateway (IAG), on the other hand, focuses on Secure Web Gateways (SWG), holds 1.0% mindshare, up 0.8% since last year.
Secure Email Gateway (SEG) Mindshare Distribution
ProductMindshare (%)
Mimecast Advanced Email Security14.1%
Proofpoint Email Protection17.7%
Microsoft Defender for Office 36513.2%
Other55.0%
Secure Email Gateway (SEG)
Secure Web Gateways (SWG) Mindshare Distribution
ProductMindshare (%)
Sangfor Internet Access Gateway (IAG)1.0%
Zscaler Internet Access9.7%
Cisco Umbrella9.4%
Other79.9%
Secure Web Gateways (SWG)
 

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.
Muhammad Asif Shaikh - PeerSpot reviewer
Deputy GM - IT at a manufacturing company with 1,001-5,000 employees
Designed to provide comprehensive and secure internet access with high visibility into users
After my purchase, I noticed a need for improvements, particularly in the area of identifying the source user of the device, which can sometimes roll back to the base. Additionally, there were challenges with SSL gate traffic, which wasn't functioning as effectively as expected. Even though there have been fixes to these issues, they should be inherent to the product and need further attention. These aspects, especially sub-features, aren't very robust and seem complex. Regarding integration, while Sangfor Internet Access Gateway (IAG) integrates well with its own products, its compatibility with third-party tools like QB is limited. There's room for improvement in making protocols compatible with various third-party products.

Quotes from Members

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

Pros

"The Large File Send feature comes in handy when you have to send fairly large attachments."
"I have always found Mimecast to be very responsive; for example, if we see something come through, they address it and it helps to sort out the issues."
"Mimecast is a brilliant product; it works very well, I have very seldomly, if ever, had any problems with it, and it does exactly what it promises to do."
"Mimecast Advanced Email Security proves to be a useful tool, allowing me as security personnel to work in a more peaceful manner."
"Mimecast has some good support services in place."
"It offers an easy initial setup."
"From the tools I have worked with, it is actually the best, and I am happy with it."
"Mimecast is pretty good, even if you're on Office 365."
"Stability-wise, I rate the solution a ten out of ten."
"The solution is interoperable and has centralized management."
"The most significant aspect is the control it offers over internet traffic, like managing computer access to specific sites such as Facebook. I find particular value in its ability to control the depth of internal traffic, enabling actions like blocking specific file extensions on social media or specific IPs. This control by categories is a standout feature for us in Sangfor Internet Access Gateway (IAG)."
 

Cons

"It was not a good experience due to the fact that our main infrastructure had a problem for that entire time."
"Improvements for Mimecast Advanced Email Security include enhancing the user interface and accessibility, particularly regarding admin capabilities to add or modify user accounts."
"The price of the solution is expensive. It can improve by reducing the price."
"The solution is expensive in comparison to similar solutions."
"The detection rates are an area for improvement."
"The solution is complex and not easy to use."
"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."
"As an area of improvement for Mimecast Advanced Email Security, I would like to see enhancements in capabilities to eliminate false positives even before emails hit the mailbox, leveraging AI functionalities."
"The solution's logging system should be improved because its logs are not precise and are a little confusing."
"In Sangfor Internet Access Gateway (IAG), its speed is an area of concern where improvements are required."
"After my purchase, I noticed a need for improvements, particularly in the area of identifying the source user of the device, which can sometimes roll back to the base. Additionally, there were challenges with SSL gate traffic, which wasn't functioning as effectively as expected. Even though there have been fixes to these issues, they should be inherent to the product and need further attention. These aspects, especially sub-features, aren't very robust and seem complex. Regarding integration, while Sangfor Internet Access Gateway (IAG) integrates well with their own products, its compatibility with third-party tools like QB is limited. There's room for improvement in making protocols compatible with various third-party products."
 

Pricing and Cost Advice

"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."
"Compared to the other solutions in the market, Mimecast Email Security with Targeted Threat Protection's pricing is fine."
"The product price is moderate. I rate the pricing a five out of ten."
"On a scale of one to ten, where one is cheap, and ten is expensive, I rate the pricing a ten."
"The product has good pricing in terms of return on investment."
"The customers can select the license packages as per their requirements."
"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."
"It's an expensive solution."
"I rate the product pricing a five or six out of ten on a scale of one to ten."
"The solution’s pricing is cheaper than any other solution."
"It is one of the reason for choosing it over other available products. However, recently, this year, there have been recurring concerns. I believe we might consider migrating to another solution."
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Top Industries

By visitors reading reviews
Outsourcing Company
10%
Computer Software Company
9%
Financial Services Firm
9%
Construction Company
8%
Comms Service Provider
11%
Educational Organization
10%
Construction Company
10%
Financial Services Firm
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise13
Large Enterprise23
No data available
 

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
No data available
 

Overview

 

Sample Customers

Hewlett-Packard Company (HP), Cushman and Wakefield, PIB Group, Swissport
Information Not Available
Find out what your peers are saying about Proofpoint, Microsoft, Mimecast and others in Secure Email Gateway (SEG). Updated: September 2026.
915,341 professionals have used our research since 2012.