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Fortinet FortiMail Cloud vs Mimecast Email Security comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Nov 5, 2024

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
6.0
Mimecast Email Security effectively prevents phishing, enhancing security and providing significant protection despite challenges in quantifying ROI.
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.
There is definitely a return on investment when using Mimecast, as it blocks phishing emails, reducing the risk of significant financial losses.
 

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
6.0
Mimecast Email Security's customer service is mixed, with responsiveness praised by some, but issues with waiting times noted by others.
I would rate the technical support from Fortinet as ten out of ten.
I didn't receive a root cause analysis, not even a single time, for any issues.
The customer service and technical support from Fortinet could improve.
Support personnel are hesitant to engage in remote sessions, preferring to share documentation via email.
Mimecast technical support is generally quite good.
I would rate my experience with technical support of Mimecast Email Security between seven and eight out of ten for their support.
 

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
7.2
Mimecast Email Security is a scalable SaaS solution, praised for flexibility and effectiveness across various organization sizes and industries.
It is highly scalable, so I can give it a ten out of ten on that.
If Mimecast Email Security introduces API solutions, it will dominate the market.
 

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 Email Security is generally stable and reliable, with rare bugs, occasional minor issues, and minimal downtime reported.
I would give it a high stability rating of nine out of ten.
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.
 

Room For Improvement

Fortinet FortiMail Cloud requires improved filtering, encryption, UI simplicity, and competitive pricing, while lacking sorting, archiving, and AI features.
Mimecast Email Security requires pricing, detection, user interface improvements, better support, and enhanced AI integration for smoother operations.
In Fortinet FortiMail Cloud, not in FortiSandbox, they need to improve the block and allow list functionality to block URLs and allow specific types of URLs or regex.
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.
It would be beneficial to enhance flexibility for better adaptation to various customer environments.
A lot of emails were missed despite being known samples.
We discussed the phishing aspect, the DNS system, and the key rotation.
Mimecast Email Security can be improved by adding some API integrations.
 

Setup Cost

Fortinet FortiMail Cloud offers competitive subscription pricing, with annual licenses around $4,000, varying by organizational needs.
Mimecast Email Security offers comprehensive features but is considered premium, with variable pricing flexibility and additional support costs.
Cost-wise, it's a bit expensive, but it's totally worth it.
The pricing for Fortinet FortiMail Cloud seems a bit high, although it is considered acceptable for the product's value.
The price is relatively expensive.
The pricing is higher for Mimecast, particularly for the Indian market, where it is considered expensive.
 

Valuable Features

Fortinet FortiMail Cloud offers robust email protection with advanced threat detection, seamless integration, and comprehensive management features.
Mimecast Email Security offers strong threat protection, seamless Microsoft 365 integration, and user-friendly features for comprehensive email threat mitigation.
FortiMail's integration with other Fortinet solutions enhances the security part of the organization.
Fortinet FortiMail Cloud has had a positive effect on our organization since we can classify each email coming to our organization.
One of the most beautiful benefits is its integration, as it can seamlessly integrate with any third-party email servers.
One of the most useful features is the threat remediation module, which can be used to remove malicious emails that may have been delivered or manually remove them.
A distinct advantage of Mimecast is its ability to block phishing and impostor attacks, which are significant threats currently.
Mimecast Email Security includes the best gateway solution across all Cisco, Trend Micro, and other solutions.
 

Categories and Ranking

Fortinet FortiMail Cloud
Ranking in Secure Email Gateway (SEG)
6th
Average Rating
8.0
Reviews Sentiment
6.7
Number of Reviews
24
Ranking in other categories
Cloud Email (4th)
Mimecast Email Security
Ranking in Secure Email Gateway (SEG)
4th
Average Rating
8.0
Reviews Sentiment
6.1
Number of Reviews
31
Ranking in other categories
Office 365 Protection (3rd)
 

Mindshare comparison

As of October 2025, in the Secure Email Gateway (SEG) category, the mindshare of Fortinet FortiMail Cloud is 4.5%, up from 2.5% compared to the previous year. The mindshare of Mimecast Email Security is 12.5%, down from 15.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Market Share Distribution
ProductMarket Share (%)
Mimecast Email Security12.5%
Fortinet FortiMail Cloud4.5%
Other83.0%
Secure Email Gateway (SEG)
 

Featured Reviews

Pravin Mandlik - PeerSpot reviewer
Provides enhanced email security with potential agent compatibility issues
There are definitely features that Fortinet should work on. I'm not the right person to implement those features. For a portable cloud solution, a customer has more affinity towards a solution where endpoint security is already in place. In endpoint security, they are not at the latest quadrant. That is why a customer with existing endpoint security solutions like Trend Micro might prefer a main security solution from that vendor. 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. From that perspective, Fortinet policies add an extra load to the endpoint. Maybe other solutions have an advantage when it comes to Fortinet.
Frank Rawson - PeerSpot reviewer
It gives clients peace of mind and helps them educate their users about threats
A few years ago, our team found the implementation to be somewhat challenging. It has gotten easier as we've grown more experienced. The difficulty depends on the expertise of the person doing it. I don't work with Mimecast every day, so it might be more difficult for me than it is for one of my techs who regularly does Mimecast implementations. It requires some specific in-depth product knowledge and an understanding of email solutions. The deployment time varies. In South Africa, it depends on who you use to deploy it. If you use one of Mimecast's local partners, it can take up to two weeks because of their process. However, it's only about four to eight hours of work. After deployment, there isn't much maintenance aside from supporting and educating your customers. Users require constant education on how to use the Mimecast client and release an email that has been blocked.
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Top Industries

By visitors reading reviews
Computer Software Company
9%
University
7%
Financial Services Firm
7%
Non Profit
6%
Computer Software Company
15%
Financial Services Firm
7%
Manufacturing Company
7%
Comms Service Provider
6%
 

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 Business16
Midsize Enterprise7
Large Enterprise11
 

Questions from the Community

What do you like most about Fortinet FortiMail Cloud?
Content disarming and analysis are essential features in our email security setup
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 do you like most about Mimecast Email Security with Targeted Threat Protection?
The interface of this solution is very easy to navigate and user-friendly. There is no delivery in email and other communications, making it reliable. The configuration is relatively easy.
What needs improvement with Mimecast Email Security with Targeted Threat Protection?
Mimecast Email Security can be improved by adding some API integrations. Instead of remaining a traditional gateway, Mimecast Email Security needs to provide API solutions similar to Check Point.
 

Also Known As

No data available
Mimecast Email Security with Targeted 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 Email Security and other solutions. Updated: September 2025.
869,202 professionals have used our research since 2012.