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Fortinet FortiMail vs Mimecast Advanced Email Security comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Feb 8, 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

Cloudflare One
Sponsored
Ranking in Email Security
20th
Average Rating
8.6
Reviews Sentiment
6.5
Number of Reviews
23
Ranking in other categories
Secure Web Gateways (SWG) (12th), Data Loss Prevention (DLP) (22nd), Cloud Access Security Brokers (CASB) (12th), Distributed Denial-of-Service (DDoS) Protection (8th), Software Defined WAN (SD-WAN) Solutions (13th), Access Management (12th), Bot Management (3rd), ZTNA as a Service (8th), ZTNA (4th), Secure Access Service Edge (SASE) (9th), Remote Browser Isolation (RBI) (2nd)
Fortinet FortiMail
Ranking in Email Security
5th
Average Rating
8.6
Reviews Sentiment
6.8
Number of Reviews
68
Ranking in other categories
No ranking in other categories
Mimecast Advanced Email Sec...
Ranking in Email Security
4th
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)
 

Mindshare comparison

As of August 2026, in the Email Security category, the mindshare of Cloudflare One is 1.7%, up from 1.4% compared to the previous year. The mindshare of Fortinet FortiMail is 2.7%, down from 4.0% compared to the previous year. The mindshare of Mimecast Advanced Email Security is 4.0%, down from 5.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Mindshare Distribution
ProductMindshare (%)
Mimecast Advanced Email Security4.0%
Fortinet FortiMail2.7%
Cloudflare One1.7%
Other91.6%
Email Security
 

Featured Reviews

CV
Network Architect at IP Dimension
Cloud security has improved remote access and has reduced costs for smaller client sites
I have used Cloudflare One's Identity-Aware Proxy, and it is quite straightforward from what I have seen so far. The app registration on the Azure side integrates fully into Cloudflare, and I am very satisfied with that part because it is easy to set up. The integration of Cloudflare One's Secure Web Gateway and Zero Trust Network Access works without any issues. That part is pretty automatic, and if you complete the rest of the setup, it comes together by itself with no issues from my side. What makes it nice is that we can actually start replacing on-site firewalls at this stage for the smaller clients because it does not matter if they go to a coffee shop or work from home; they are still secured by the same connection. The hops get shorter and you get better latency. We have done testing to see if it is better. One thing that we did notice with our proof of concept with our current client is that they have people connecting from the UK. When they used their previous VPN solution, uploading CAD drawings and other files to the server took a long time. They mentioned that it is much quicker on Cloudflare One's solution. I definitely believe that is part of the improved performance, and I am satisfied with that as well. What is nice about Cloudflare One is that it makes the setup easier and also easier to train technicians to maintain it. Compared to legacy systems, we do not need to get fancy firewalls in place that are costly. That is definitely also a cost-saver with Cloudflare One.
Abhimanyu Das - PeerSpot reviewer
Senior Cybersecurity Engineer at Kyndryl
Targeted email filtering has reduced spam and phishing and now saves significant investigation time
The best features of Fortinet FortiMail include its techniques and tactics, which are highly effective compared to other solutions such as Microsoft 365. Although Fortinet FortiMail may not be as advanced in some aspects, it is well recognized for its strong performance in handling spam and phishing. It performs thorough mail scanning and also offers a sandboxing feature that enhances protection. Fortinet FortiMail has had a positive impact on my organization by significantly reducing unwanted email activities such as spam and phishing. It provides accurate detection and generates results that often exceed what can be achieved through manual analysis. Since deploying Fortinet FortiMail, I have observed a reduction in investigation time by at least 20 to 30 percent.
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.

Quotes from Members

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

Pros

"It is a stable solution."
"The capabilities of the software are strong enough for me to do what it's supposed to do. For me, we don't need to do a lot of configuration on our site. We just enable it and monitor it."
"Enables me to work from two locations."
"It will take the blow rather than our applications should an attack occur."
"Cloudflare Access is part of the Zero Trust philosophy."
"Cloudflare Zero Trust Platform removes the risk of exposing the applications to the public."
"Cloudflare is by far the most effective solution that I have come across."
"The blocking feature is very good."
"Fortinet utilizes specialized processing units, which network faster and sample more efficiently compared to others."
"I think the spamming feature is very valuable."
"The product's initial setup phase was very easy."
"This is a very stable product and all of our customers are happy that we use it."
"The anti-spam feature is very valuable."
"For now, as per our experience with FortiMail in handling a large number of emails and spams as well, in the past three years, we have been protected and saved from any attacks from the outside."
"The antiphishing capabilities are very good."
"Fortinet FortiMail is very reliable and stable since the databases are very strong."
"The product's most valuable features are impersonation protection and phishing countermeasures."
"My advice to those considering this product would be to go for it."
"The initial setup is very straightforward."
"In terms of efficacy, Proofpoint is better than Mimecast, though it's a little difficult to manage."
"Mimecast certainly helped my customers reduce phishing emails."
"The piece that is most valuable from the Mimecast standpoint will be the sandboxing feature."
"Due to our specialized use case, that HIPAA dictionary really comes in handy."
"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."
 

Cons

"When there are any dynamic changes in complex applications, the tool takes a lot of time, making its analytics-related area a major matter of concern where improvements are needed."
"The onboarding process can be improved a little bit."
"Our customers no longer use Cloudflare because its service is subpar."
"I would like them to include a VPN feature to provide a secure connection to the data center."
"Feedback could be enhanced. While I work efficiently with Clover as a partner in Mexico City, sometimes the information and requests are easier to manage with more concrete solutions."
"Automation could be improved where you can easily add a TLS and SSL certificate to an application or web app if the developer did not include it."
"Cloudflare One is not very powerful, but for what we require, it is basic and sufficient."
"Operating and tuning the product is difficult."
"I think they should improve Fortinet FortiMail on-premises by enhancing its user interface."
"The product should work on licensing and provide more detail once the license is selected for the customer."
"I would like the integration to be easier."
"In my opinion, points for improvement for Fortinet FortiMail include sometimes the speed and fine-tuning the false positive problems, especially with the signed PDF attachments and the whitelist and blacklist."
"I will not give good marks on their support team."
"Sometimes it takes a little bit too long to determine if an email is good or not. If they could shorten that time span, it'd be so much better. It does delay our email, which does not make users happy. That said, I would have to say we have not been blacklisted for quite a while now."
"A room for improvement in Fortinet FortiMail is that it only has a hardware version. I also didn't find the solution scalable, so that's another area for improvement."
"I would like it if the solution could be more affordable."
"The reaction time between a new threat being identified and Mimecast picking it up needs to be narrowed a bit."
"The attachment scanning feature doesn't work properly."
"They should improve the cookies management feature."
"This solution can be frustrating. It blocks many things that should be going through."
"The solution is expensive in comparison to similar solutions."
"The interface isn't the best. How everything works on the back end is confusing."
"We discussed the phishing aspect, the DNS system, and the key rotation."
"The product's interface could be improved to be more user-friendly."
 

Pricing and Cost Advice

"The solution is not that expensive."
"The solution's pricing lacks transparency."
"My company has to make yearly payments towards the licensing costs attached to the solution. There are no hidden charges apart from the licensing costs of the solution."
"The price tag is no longer $200,000, but rather $300,000 to $400,000. It's twice."
"The prices are slightly expensive."
"The pricing is somewhere in the middle. I would rate the pricing a seven out of ten."
"Cloudflare Zero Trust Platform's pricing is good."
"The pricing of the solution is cheap. The licensing cost is also very low. I rate the cost and pricing a three out of ten."
"Compared to its competitors, Fortinet's products are available at a higher price range."
"There is a license required for this solution."
"It is an expensive product."
"Price-wise, the solution is not far from Microsoft ATP. So, it is affordable."
"The pricing is good."
"Fortinet FortiMail has an annual license agreement."
"9,000 Euro per annum for Fortinet Mail and sandbox."
"The solution is quite pricey compared to other competitors in the market."
"The solution is expensive."
"The product price is moderate. I rate the pricing a five out of ten."
"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."
"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."
"For what it is, the product is overpriced."
"On a scale of one to ten, where one is cheap, and ten is expensive, I rate the pricing a ten."
"The customers can select the license packages as per their requirements."
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Top Industries

By visitors reading reviews
Construction Company
19%
Comms Service Provider
11%
Outsourcing Company
9%
Financial Services Firm
8%
Construction Company
9%
Financial Services Firm
9%
Manufacturing Company
8%
Computer Software Company
8%
Computer Software Company
10%
Financial Services Firm
9%
Construction Company
9%
Outsourcing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise1
Large Enterprise12
By reviewers
Company SizeCount
Small Business32
Midsize Enterprise23
Large Enterprise15
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise12
Large Enterprise19
 

Questions from the Community

What needs improvement with Cloudflare Zero Trust Platform?
In my opinion, Cloudflare One can be improved mainly through compatibility, as the integration should be much simpler...
What is your primary use case for Cloudflare Zero Trust Platform?
Cloudflare One's primary use case for my organization is to protect servers and to provide remote access with the VPN...
What needs improvement with Fortinet FortiMail?
I think they should improve Fortinet FortiMail on-premises by enhancing its user interface. Additional features they ...
What is your primary use case for Fortinet FortiMail?
I do have a partnership with Fortinet. I have been both a partner and reseller.
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...
 

Also Known As

Cloudflare Area 1 Email Security, Cloudflare Bot Management, Cloudflare Gateway, Cloudflare Zero Trust Platform, Cloudflare DDoS, Cloudflare SASE & SSE Platform
FortiMail
Mimecast Email Security with Targeted Threat Protection, Mimecast Web Security, Mimecast Mailbox Continuity, Email and Collaboration Threat Protection
 

Overview

 

Sample Customers

23andMe
Magromer Cueros y Pieles S.A.
Hewlett-Packard Company (HP), Cushman and Wakefield, PIB Group, Swissport
Find out what your peers are saying about Fortinet FortiMail vs. Mimecast Advanced Email Security and other solutions. Updated: August 2026.
908,800 professionals have used our research since 2012.