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Mimecast Email Security vs Sophos Email comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on May 21, 2025

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
6.6
Mimecast Email Security effectively prevents phishing, enhancing security and providing significant protection despite challenges in quantifying ROI.
Sentiment score
8.6
Sophos Email delivers cost-efficient security and reduces unsolicited emails, enhancing ROI, particularly valuable for government contracts.
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
5.8
Mimecast Email Security's customer service is mixed, with responsiveness praised by some, but issues with waiting times noted by others.
Sentiment score
6.5
Sophos Email support is responsive but requires improvements in speed and expertise; users can contact via phone, chat, or email.
Support personnel are hesitant to engage in remote sessions, preferring to share documentation via email.
Mimecast technical support is generally quite good.
When I reported a problem with our firewall, they acted promptly and delivered another piece of equipment.
 

Scalability Issues

Sentiment score
7.2
Mimecast Email Security is a scalable SaaS solution, praised for flexibility and effectiveness across various organization sizes and industries.
Sentiment score
7.4
Sophos Email is scalable and reliable for SMEs, though licensing and server maintenance can be challenging for larger use.
 

Stability Issues

Sentiment score
7.5
Mimecast Email Security is generally stable and reliable, with rare bugs, occasional minor issues, and minimal downtime reported.
Sentiment score
8.1
Sophos Email is reliable and stable, highly rated for handling significant email activity despite minor issues and update requests.
 

Room For Improvement

Mimecast Email Security requires pricing, detection, user interface improvements, better support, and enhanced AI integration for smoother operations.
Sophos Email needs better security, user interface, compatibility, and performance, with improvements in pricing and reporting features.
A lot of emails were missed despite being known samples.
We discussed the phishing aspect, the DNS system, and the key rotation.
Sophos Email does not work with split delivery.
 

Setup Cost

Mimecast Email Security offers comprehensive features but is considered premium, with variable pricing flexibility and additional support costs.
Sophos Email offers reasonable pricing with flexible options, balancing affordability and features for various organizational needs.
The pricing is higher for Mimecast, particularly for the Indian market, where it is considered expensive.
Sophos Email pricing is a bit high, especially since I purchase through a partner, and they sell it at a higher price since they also seek to make a profit.
 

Valuable Features

Mimecast Email Security offers strong threat protection, seamless Microsoft 365 integration, and user-friendly features for comprehensive email threat mitigation.
Sophos Email provides robust security, AI-driven features, and seamless integration with Office 365 and Google Workspace for comprehensive protection.
A distinct advantage of Mimecast is its ability to block phishing and impostor attacks, which are significant threats currently.
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.
It provides a defense layer for email protection, scanning every incoming and outbound email for malware and spam.
The spam reduction feature in Sophos Email provides comfort when using it.
 

Categories and Ranking

Mimecast Email Security
Ranking in Office 365 Protection
3rd
Average Rating
8.0
Reviews Sentiment
6.2
Number of Reviews
31
Ranking in other categories
Secure Email Gateway (SEG) (4th)
Sophos Email
Ranking in Office 365 Protection
1st
Average Rating
8.2
Reviews Sentiment
7.1
Number of Reviews
32
Ranking in other categories
Email Security (10th)
 

Mindshare comparison

As of July 2025, in the Office 365 Protection category, the mindshare of Mimecast Email Security is 20.0%, up from 11.3% compared to the previous year. The mindshare of Sophos Email is 10.3%, down from 19.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Office 365 Protection
 

Featured Reviews

ShaheenKapery - PeerSpot reviewer
Provides valuable security features and has a straightforward setup process
The initial setup process is straightforward and takes a weekend at most. A .com domain can take up to forty-eight hours, while a local domain takes about four to eight hours because it has to propagate through the international DNS records. It is a cloud-only solution. If you're managing email security on-premises, you use your bandwidth to download emails, including spam, and then use your servers to clean it up. For example, say a third of your email is spam; this consumes significant bandwidth and resources. However, if you use Mimecast, they filter the emails on their servers before delivering them to you. It can be a major selling point in regions with expensive bandwidth, such as Africa. You can save bandwidth and improve overall efficiency by offloading the spam filtering to Mimecast.
Ahmed_Fahmy - PeerSpot reviewer
Provides a powerful and simple email protection with proven management benefits
Sophos Email is integrated with Office 365 and Google Workspace. It offers anti-spam functionality, which is easy to manage and comes with documentation on how to integrate it with Office 365 and Google Workspace. It provides a defense layer for email protection, scanning every incoming and outbound email for malware and spam. It can also function temporarily as an email solution if my vendor from Office 365 or Google Workspace is out of service.
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860,168 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
14%
Financial Services Firm
8%
Manufacturing Company
7%
Comms Service Provider
5%
Computer Software Company
13%
Manufacturing Company
9%
Comms Service Provider
8%
Financial Services Firm
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

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 is your experience regarding pricing and costs for Mimecast Email Security with Targeted Threat Protection?
The pricing is higher for Mimecast, particularly for the Indian market, where it is considered expensive.
What needs improvement with Mimecast Email Security with Targeted Threat Protection?
There is nothing that notably stands out in need of improvement at present.
What do you like most about Sophos Email?
The solution's identity proxy feature is very good and reliable.
What is your experience regarding pricing and costs for Sophos Email?
Sophos Email pricing is a bit high, especially since I purchase through a partner, and they sell it at a higher price since they also seek to make a profit.
What needs improvement with Sophos Email?
Sophos Email does not work with split delivery. If I have a domain with 100 mailboxes and want to protect only 50, it is not recommended by Sophos or not possible to configure.
 

Also Known As

Mimecast Email Security with Targeted Threat Protection
Sophos Email Security
 

Overview

 

Sample Customers

Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Del Monte Foods, Terra Verde, spicerhaart, RIVERLITE, Dataprise, SureBridge, Reed's School, Sayfol International School
Find out what your peers are saying about Mimecast Email Security vs. Sophos Email and other solutions. Updated: June 2025.
860,168 professionals have used our research since 2012.