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Mimecast Advanced Email Security vs Prisma Access Browser 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

iboss
Sponsored
Ranking in Secure Web Gateways (SWG)
6th
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
22
Ranking in other categories
Internet Security (3rd), Web Content Filtering (1st), Cloud Access Security Brokers (CASB) (6th), ZTNA as a Service (7th), Secure Access Service Edge (SASE) (7th)
Mimecast Advanced Email Sec...
Ranking in Secure Web Gateways (SWG)
10th
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
44
Ranking in other categories
Email Archiving (2nd), Office 365 Protection (2nd), Secure Email Gateway (SEG) (3rd)
Prisma Access Browser
Ranking in Secure Web Gateways (SWG)
17th
Average Rating
8.0
Reviews Sentiment
4.4
Number of Reviews
4
Ranking in other categories
Enterprise Browsers (1st)
 

Mindshare comparison

As of July 2026, in the Secure Web Gateways (SWG) category, the mindshare of iboss is 3.5%, up from 2.0% compared to the previous year. The mindshare of Mimecast Advanced Email Security is 0.7%, up from 0.4% compared to the previous year. The mindshare of Prisma Access Browser is 2.5%, up from 1.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Web Gateways (SWG) Mindshare Distribution
ProductMindshare (%)
iboss3.5%
Mimecast Advanced Email Security0.7%
Prisma Access Browser2.5%
Other93.3%
Secure Web Gateways (SWG)
 

Featured Reviews

Ashok Ananthula - PeerSpot reviewer
Senior Consultant Proxy Engineering at a financial services firm with 10,001+ employees
Cloud gateway has strengthened remote web security and now needs better Mac and ISP support
The problem our organization had is that iboss failed for the Mac devices. It is not able to give a successful agent for the Mac agents. That is where in 2025, we had to migrate to the Palo Alto-based platform. If your use case is for just Windows laptops,you can consider this platform as an option One issue is the data center resiliency part. In India especially, they are not tied up with the Tier 1 ISPs like Tata or Airtel; they were having Tier 2 ISPs and encountered many issues reaching few major sites that my organization depends on, and they were having problems that they could not fix quickly. They also lack a mechanism to route that traffic within their data center; rather, they ask customers to make a pac file change to route it to Singapore explicitly. It would be better if they route from their backend , i mean even if I send it to India DC, they should be able to route it internally to make that work; however, they fail to do that and ask the customer to route it in the pac file. Another suggestion is that in China, they do not have the proper setup; they used to have numerous problems with slowness and lack of premium circuits in China as well. That leads to multiple sites working slowly with latency-related issues. So the main issue is the ISP-related problems that need to be solved.
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.
reviewer2750658 - PeerSpot reviewer
Consultant Avant Vente Cybersécurité at a comms service provider with 5,001-10,000 employees
Browser security has strengthened web DLP and protects unmanaged devices from data exfiltration
SD-WAN capability is another solution, and it is not Prisma Access Browser; we do not have SD-WAN capability with Prisma Access Browser. I would like to improve the private access to do the ZTNA. I think that Palo Alto has released the versions and integrated the private access in Prisma Access Browser, but I'm not sure. The feature that is missing in Prisma Access Browser is the capability to monitor the private access where a user can access a private app with authentication, posture, and granular access. Regarding the pricing aspect, many customers find that the solution is a little bit expensive. Palo Alto should reconsider the pricing as it is a bit expensive.

Quotes from Members

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

Pros

"I would definitely recommend iboss for web filtering purposes to other organizations or individuals."
"Granular setup, which was able to set different levels of filters using the OUs in the AD."
"We chose iboss for both zero trust and proxy (SWG) because their SWG was superior."
"iboss is among the few products providing inline filtering where no application is needed on the device. It operates on the network side and is not device-based. This feature was one of the main reasons why we stayed with them for so long."
"iboss is pretty scalable. They provide good support. The case managers you work with to coordinate what you need are pretty good."
"Content filtering is the most useful feature of iboss."
"From a use-case scenario, what I like the most is the plug-in. I like the fact that we can do the filtering of these devices offsite independent of the network they are connected to, and we do not have to have traffic coming back inside our network."
"The security aspect of the solution, particularly the malware behind it, is excellent."
"The security on offer is very good."
"The solution is pretty straightforward to use and easy to set up."
"It is our spam filter, phishing filter, and executive impersonation filter."
"Its administration console is very easy to use. The administration console is absolutely important because you interact with the platform through it."
"The reviewer gave Mimecast Email Security a rating of 10 out of 10."
"The solution is stable and reliable. There are no bugs or glitches, and it doesn't crash or freeze."
"The most valuable feature is the DMARC Analyzer."
"Mimecast has been in the market for a long time; it's a good tool if you want to simplify your operations and a good tool for removing on-prem appliances that otherwise you would need to do with the protection that Mimecast provides."
"Prisma Access Browser is the most capable, advanced, and flexible product."
"The most interesting use case that interests our customers is the DLP features on Prisma Access Browser; it is a great DLP solution with watermark and prevents data exfiltration."
"Prisma Access Browser improves security because the browser is one of the attack surfaces, it needs more security on the endpoint device and standardization of device usage, and it also helps standardize the access policy to the internet."
 

Cons

"One thing I would like to see differently with their Zero Trust platform is that some of the AI aspects related to high-risk activities have more false positives."
"Our biggest problem with their service was it did not recognize the device and filtering did not always work correctly."
"The problem our organization had is that iboss failed for the Mac devices; it is not able to give a successful agent for the Mac agents, and that is where in 2025 we had to migrate to the Palo Alto-based platform."
"The dashboards for local use could be better."
"SSL decryption: We had issues with learners using apps instead of using web browsers. This type of encryption is tough for any appliance in a BYOD environment."
"The reporting feature needs improvement."
"The endpoint-type solution is an area that needs some improvement."
"I have heard they are doing DDoS filtering, but I am not certain if they are implementing it correctly."
"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."
"The price could be better, it should be reduced."
"The installation is not so straightforward."
"They should improve the cookies management feature."
"I'd like to have better support from the product in the future."
"The reaction time between a new threat being identified and Mimecast picking it up needs to be narrowed a bit."
"From an administrative point of view, Mimecast is a little bit cumbersome and difficult. It's not something that the end-user can easily find navigate themselves."
"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 maturity of the product needs improvement as the implementation is very complex."
"On a scale of one to 10, I would rate Palo Alto's customer service or technical support as three. Their support is very poor."
"In the beginning, the solution may not be very user-friendly and could be complex."
"Regarding the pricing aspect, many customers find that the solution is a little bit expensive."
 

Pricing and Cost Advice

"We have not priced the solution recently, but they were competitive with other vendors in the past."
"It is not expensive, and it is also not cheap. iboss is priced right in the sweet spot for the number of features it offers."
"It is probably in line with other solutions, but I do not deal with the financial side."
"It is expensive compared to one of its competitors."
"The overall pricing for iboss is very competitive and transparent."
"We had the cost of purchasing a new appliance along with the implementation and licensing costs. However, the following year, the cost of just licensing was similar to what was paid the previous year for a new appliance along with the implementation and licensing costs."
"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 price of Mimecast Mailbox Continuity is 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."
"It is a bit expensive."
"The solution is expensive."
"The product has good pricing in terms of return on investment."
"For what it is, the product is overpriced."
Information not available
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Manufacturing Company
9%
Computer Software Company
8%
Construction Company
7%
Computer Software Company
11%
Financial Services Firm
9%
Construction Company
8%
Manufacturing Company
6%
Financial Services Firm
14%
Manufacturing Company
9%
Computer Software Company
9%
University
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business7
Midsize Enterprise7
Large Enterprise9
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise12
Large Enterprise18
No data available
 

Questions from the Community

What needs improvement with iboss?
The problem our organization had is that iboss failed for the Mac devices. It is not able to give a successful agent ...
What is your primary use case for iboss?
We used iBoss mainly for Internet Access by having an Agent on Windows laptops Primarily because when we try to use i...
What is your experience regarding pricing and costs for iboss?
I am not involved in pricing, but as per the information I have, during that time, the Blue Coat proxies we were usin...
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 w...
What needs improvement with Prisma Access Browser?
SD-WAN capability is another solution, and it is not Prisma Access Browser; we do not have SD-WAN capability with Pri...
What is your primary use case for Prisma Access Browser?
We are integrators, and we do not use Prisma Access Browser for our personal use or professional use; we use Prisma A...
What advice do you have for others considering Prisma Access Browser?
With granular policy enforcement, we can enforce policy for users, groups of users, or many domains; we can whitelist...
 

Also Known As

iBoss Cloud Platform
Mimecast Email Security with Targeted Threat Protection, Mimecast Web Security, Mimecast Mailbox Continuity, Email and Collaboration Threat Protection
No data available
 

Overview

 

Sample Customers

More than 4,000 global enterprises trust the iboss Cloud Platform to support their modern workforces, including a large number of Fortune 50 companies.
Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Lemonade, Rapyd, Telit Cinterion, Landry’s, Golden Nugget, Houston Rockets
Find out what your peers are saying about Mimecast Advanced Email Security vs. Prisma Access Browser and other solutions. Updated: June 2026.
902,988 professionals have used our research since 2012.