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Fortinet FortiMail Cloud vs Mimecast Advanced Email Security comparison

 

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:
 

ROI

Sentiment score
7.0
ROI from Fortinet FortiMail Cloud is hard to quantify, though enhanced security and decreased incidents indicate value satisfaction.
Sentiment score
5.3
Mimecast Advanced Email Security offers substantial protection against threats, justifying its cost despite support and stability concerns.
Return on investment in the time is difficult to quantify, however, the return on investment for us was achieved since we did not have similar incidents again in our environment.
Director at a tech services company with 11-50 employees
There is definitely a return on investment when using Mimecast, as it blocks phishing emails, reducing the risk of significant financial losses.
Senior Tech. Lead at WE
The ROI which companies see should be able to justify buying Mimecast Advanced Email Security.
Solution Architect Cybersecurity at Microland Limited
 

Customer Service

Sentiment score
6.8
Fortinet FortiMail Cloud support is generally praised for its responsiveness and knowledge, despite some concerns about occasional delays.
Sentiment score
5.3
Mimecast Advanced Email Security offers responsive support, though users suggest enhancements in flexibility and documentation for even better service.
As far as Fortinet secure support, I will rate them nine out of ten.
Director at a tech services company with 11-50 employees
I would rate the technical support from Fortinet as ten out of ten.
Senior Network and Security Engineer at Symbol Technologies PLC
Fortinet's support is really good.
Cyber Security Engineer at a financial services firm with 501-1,000 employees
Support personnel are hesitant to engage in remote sessions, preferring to share documentation via email.
Senior Tech. Lead at WE
The customer support for Mimecast Advanced Email Security is excellent.
Manager - EUC at Finthrive
We instantly get customer support from Mimecast Advanced Email Security whenever there is a requirement.
System Engineer II at a media company with 5,001-10,000 employees
 

Scalability Issues

Sentiment score
7.6
Fortinet FortiMail Cloud offers scalable user expansion, though experiences vary due to subscription and deployment choices impacting flexibility.
Sentiment score
7.0
Mimecast Advanced Email Security is highly scalable, seamlessly supporting diverse organizational sizes and large email volumes in cloud environments.
It is highly scalable, so I can give it a ten out of ten on that.
Director at a tech services company with 11-50 employees
It handles email flow very smoothly, and we never face any issues with email delivery as our organization grows or email volume increases.
System Engineer II at a media company with 5,001-10,000 employees
If Mimecast Email Security introduces API solutions, it will dominate the market.
Email Security Engineer at Logic Infosecurity
While our user base remains around 2,200, I believe it can adapt to much larger requirements as needed, based on discussions with others managing larger organizations.
Manager - EUC at Finthrive
 

Stability Issues

Sentiment score
7.0
Fortinet FortiMail Cloud is highly stable with minimal downtime, consistently reliable performance, and high user satisfaction ratings.
Sentiment score
7.5
Mimecast Advanced Email Security is highly stable, reliable, and efficient, despite occasional downtime and login issues.
I would give it a high stability rating of nine out of ten.
Director at a tech services company with 11-50 employees
They confirm it's a good solution where only one or two rare emails get through, while the rest are properly blocked without any issues.
Email Security Engineer at Logic Infosecurity
The issues we did have were causing quite a lot of problems.
IT Manager at a logistics company with 201-500 employees
Mimecast Advanced Email Security is a good product and is very stable.
Solution Architect Cybersecurity at Microland Limited
 

Room For Improvement

Fortinet FortiMail Cloud requires improved filtering, encryption, UI simplicity, and competitive pricing, while lacking sorting, archiving, and AI features.
Mimecast Advanced Email Security needs better support, interface, accuracy, simplified admin features, competitive pricing, and enhanced phishing detection.
If we go for FortiMail Cloud and have a separate endpoint security solution, there are two agents that have to sit on a customer endpoint.
Director at a tech services company with 11-50 employees
It would be beneficial to enhance flexibility for better adaptation to various customer environments.
Owner at wct it-solutions GmbH
We can't import files into the Fortinet FortiMail Cloud sensors.
Senior Network Security Engineer at Vibs
When you buy an XDR provider, they give you a complete holistic story around it, showing what has happened, which email somebody has clicked on, whether there have been any changes, and whether there is any network activity.
Solution Architect Cybersecurity at Microland Limited
A lot of emails were missed despite being known samples.
Senior Tech. Lead at WE
Mimecast Email Security is somewhat expensive compared to the competition in the Indian market.
Co-Founder & VP-Sales at QuantumShield Technologies LLP
 

Setup Cost

Fortinet FortiMail Cloud offers competitive subscription pricing, with annual licenses around $4,000, varying by organizational needs.
Mimecast Advanced Email Security is costly, with some users valuing its ROI, while others find it non-competitive.
The price is relatively expensive.
Senior Network and Security Engineer at Symbol Technologies PLC
The pricing for Fortinet FortiMail Cloud seems a bit high, although it is considered acceptable for the product's value.
Owner at wct it-solutions GmbH
Cost-wise, it's a bit expensive, but it's totally worth it.
Senior Network Security Engineer at Vibs
The pricing is higher for Mimecast, particularly for the Indian market, where it is considered expensive.
Senior Tech. Lead at WE
Regarding the price, I think that in terms of similar products, it is pretty much in the same line, so I think it's reasonable.
IT Manager at a logistics company with 201-500 employees
Overall, my experience with pricing, setup costs, and licensing was smooth.
Manager - EUC at Finthrive
 

Valuable Features

Fortinet FortiMail Cloud offers robust email protection with advanced threat detection, seamless integration, and comprehensive management features.
Mimecast offers comprehensive email security with phishing prevention, sandboxing, and seamless Microsoft 365 integration, ensuring robust threat protection.
FortiMail's integration with other Fortinet solutions enhances the security part of the organization.
Cyber Security Engineer at a financial services firm with 501-1,000 employees
Fortinet FortiMail Cloud has had a positive effect on our organization since we can classify each email coming to our organization.
Consultant for the Chairman at Financial Literacy Knowledge Hub
The return on investment for us was achieved since we did not have similar incidents again in our environment.
Director at a tech services company with 11-50 employees
There was a signature phishing scam on the internet, but Mimecast Advanced Email Security caught it before it came to fruition and instantly blocked that signature-based phishing scam.
System Engineer II at a media company with 5,001-10,000 employees
It easily generates reports about the kinds of emails coming in weekly and classifies them into various categories, making it very helpful to analyze and ensure our email gateway remains safe and secure by updating all security patches.
Senior Managing Consultant at a tech vendor with 10,001+ employees
A distinct advantage of Mimecast is its ability to block phishing and impostor attacks, which are significant threats currently.
Senior Tech. Lead at WE
 

Categories and Ranking

Fortinet FortiMail Cloud
Ranking in Secure Email Gateway (SEG)
8th
Average Rating
8.0
Reviews Sentiment
6.7
Number of Reviews
24
Ranking in other categories
Cloud Email (4th)
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), Secure Web Gateways (SWG) (10th), Office 365 Protection (2nd)
 

Mindshare comparison

As of July 2026, in the Secure Email Gateway (SEG) category, the mindshare of Fortinet FortiMail Cloud is 3.9%, down from 4.7% compared to the previous year. The mindshare of Mimecast Advanced Email Security is 15.2%, up from 12.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Mindshare Distribution
ProductMindshare (%)
Mimecast Advanced Email Security15.2%
Fortinet FortiMail Cloud3.9%
Other80.9%
Secure Email Gateway (SEG)
 

Featured Reviews

IA
Consultant for the Chairman at Financial Literacy Knowledge Hub
Positive impact observed with email classification and encryption, but improvements needed in classification accuracy
The best features of Fortinet FortiMail Cloud are the classification of email and spam helper functionality. We are making a mix between human interaction and the cloud for the device itself. We are using pre-configured control on the device itself, and for the cloud, for the automatic notifications of classification. I have used the identity-based email encryption feature and we are using the mail encryption feature. We are not delivering the email until the user confirms that they know the sender; it remains encrypted until after confirmation that the email is safe. Fortinet FortiMail Cloud has had a positive effect on our organization since we can classify each email coming to our organization. We can identify false positives, spam emails, and other classifications for each email coming to our organization.
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.
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904,836 professionals have used our research since 2012.
 

Top Industries

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

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise8
Large Enterprise2
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise12
Large Enterprise18
 

Questions from the Community

What is your experience regarding pricing and costs for Fortinet FortiMail Cloud?
The price of Fortinet FortiMail Cloud in Egypt is very competitive against other products, including the setup cost and licensing of this solution.
What needs improvement with Fortinet FortiMail Cloud?
The improvement in Fortinet FortiMail Cloud can be made regarding the classification process itself because it has some false positives.
What is your primary use case for Fortinet FortiMail Cloud?
I have experience working with Fortinet FortiMail Cloud as a mail gateway, not a firewall, and we have been using it for about three or four years. I have worked with Fortinet FortiMail Cloud for t...
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...
 

Also Known As

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

Overview

 

Sample Customers

Black Gold Regional Schools, Amadeus Hospitality, Jefferson County, Chunghwa Telecom, City of Boroondara, Dimension Data
Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Find out what your peers are saying about Fortinet FortiMail Cloud vs. Mimecast Advanced Email Security and other solutions. Updated: June 2026.
904,836 professionals have used our research since 2012.