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Mimecast Advanced Email Security vs Sophos Email Appliance [EOL] comparison

The compared Mimecast and Sophos solutions aren't in the same category. Mimecast is ranked #3 in SEG , with an average rating of 8.3, and holds a 15.1% mindshare in the category. Additionally, 92% of Mimecast users are willing to recommend the solution, compared to 100% of Sophos users who would recommend it.
Mimecast Advanced Email Sec...
Read 40 Mimecast Advanced Email Security reviews
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92% willing to recommend
 

Comparison Buyer's Guide

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Executive Summary
We performed a comparison between Mimecast Advanced Email Security and Sophos Email Appliance [EOL] based on real PeerSpot user reviews.

Find out what your peers are saying about Proofpoint, Microsoft, Mimecast and others in Secure Email Gateway (SEG).

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To learn more, read our detailed Secure Email Gateway (SEG) Report (Updated: May 2026).
Buyer's Guide
Secure Email Gateway (SEG)
May 2026
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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

Mimecast Advanced Email Sec...
Average Rating
8.0
Reviews Sentiment
6.0
Number of Reviews
40
Ranking in other categories
Email Archiving (2nd), Secure Web Gateways (SWG) (15th), Office 365 Protection (2nd), Secure Email Gateway (SEG) (3rd)
Sophos Email Appliance [EOL]
Average Rating
8.4
Number of Reviews
7
Ranking in other categories
No ranking in other categories
 

Featured Reviews

Ravishankar KumarPatel - PeerSpot reviewer
Ravishankar KumarPatel
Solution Architect Cybersecurity at Microland Limited
Email defenses have reduced phishing risk and support strong compliance and user awareness
The improvement needed is not necessarily in the product itself, but rather around how other organizations have evolved. The DLP discussion is no longer limited to email; it has gone to border level with companies like Zscaler, Netskope, and Palo Alto giving the complete full-stack SASE setup. When somebody has a SASE setup, then Mimecast Advanced Email Security DLP might not even be needed at a point in time. Mimecast Advanced Email Security needs to improve in this area because they are only focusing on a particular set of problems which is on email and human risk, whereas companies that need a slightly bigger picture will look elsewhere. The second thing is 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. You get a holistic picture. When pushing Mimecast Advanced Email Security to end customers, people are more often saying that they would rather buy XDR from another provider because the story when an analyst sees is complete in terms of what they see, whereas they only get an email story from Mimecast Advanced Email Security. Mimecast Advanced Email Security has to improve there. Companies like Abnormal AI cover more on UEBA and user behavior, and there are many things for Mimecast Advanced Email Security to improve in this area as well. It is less of a technology issue; they are doing very well on email. The conversation for them to have is on how to get into a broader level or how to get a tie-up to become a broader supplier. At least from a service provider landscape, I can say that.
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reviewer1279443 - PeerSpot reviewer
reviewer1279443
Senior Security Architect at a tech services company with 51-200 employees
Easy to install and secures users against URL relay attacks, spam, and malicious attachments
The frequency in which this solution receives technical updates should be improved. If they are to be rated as the number one email appliance then they should also be the first to receive updates. It should happen across all of the customers, immeidately. In the next release of this solution, I would like to see more user awareness, such as information about phishing email attacks that have been prevented. The baselining and reporting is better with some of the competing solutions.
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Quotes from Members

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

Pros

"It offers an easy initial setup."
"I recommend Mimecast based on customer requirements and budget."
"It does a good job for us, and its admin console is easy to use."
"If I had to mention one or two things that bring the biggest benefit, I would say the security of the emails and dealing with everything."
"It's good, it keeps the spam out, and it does a really good job at not allowing threats through."
"We like Mimecast's spam filtering. The email signature feature is also a big plus for our users."
"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."
"The security on offer is very good."
More Mimecast Advanced Email Security pros
"Using this solution, they are no longer able to manipulate emails."
"Sophos Email Appliance provides a layer of security that effectively defends against malicious attacks that arrive via email."
"Previous issues were resolved as soon as we deployed the solution."
"The filtering aspect is the solution's most valuable feature."
"The solution is scalable; we have about 400 users on it right now."
"The interface makes it really easy to administer and configure."
"Overall, this solution is easy to handle."
"The most valuable feature is the URL relay protection because it protects users from phishing attacks."
More Sophos Email Appliance [EOL] pros
 

Cons

"As a user, the user interface of the management console could be upgraded, for example."
"The system is not user-friendly because you have to create policies that are mapped in a dictionary."
"Lately, Mimecast's outbound mail servers have been regularly blocklisted by spam filters. That didn't happen a few years back, but it seems to be a more frequent problem these days. When a server is blocklisted, it means all of my outgoing mail ends up in the recipient's junk mail. That affects my reputation and business confidence."
"Their support should be improved. They are notorious for sending you to knowledge-based articles rather than actually talking to you, but that is, unfortunately, kind of becoming a trend with everything. In terms of features, I haven't had any complaints. However, I don't like the fact they moved to a paid training subscription model. They used to have a lot of free webinars for training, but they have started to charge for them in the past year."
"Certainly, the primary area needing improvement is Mimecast's customer support. Our experience as Mimecast customers has been less than satisfactory. Even when raising a priority ticket, the response time is unacceptably long, often taking around five to six hours. This level of service is disappointing. Additionally, there have been recurring service disruptions in the UK region, leading to extended email delays due to various service issues. This year alone, we've encountered such problems on approximately four occasions."
"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 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 product's interface could be improved to be more user-friendly."
More Mimecast Advanced Email Security cons
"Reporting could have more options for users to customize desired results."
"It may be possible for them to improve on the options in reporting."
"Sometimes there are issues with exchange and active directory integration."
"In the next release of this solution, I would like to see more user awareness, such as information about phishing email attacks that have been prevented."
"The reporting functionality is in major need of improvement."
"There aren't enough advanced settings. They should offer more advanced options."
"In the advanced version, you have DLP, Data Loss Prevention, but when you buy the standard version, you don't have it."
"Occasionally the solution doesn't catch spam mail."
More Sophos Email Appliance [EOL] cons
 

Pricing and Cost Advice

"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."
"The price of Mimecast Mailbox Continuity is expensive."
"The product price is moderate. I rate the pricing a five out of ten."
"It's an expensive solution."
"The solution is expensive."
"I'm always going to say the price needs to be lower, but it's reasonable."
"The product has good pricing in terms of return on investment."
"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."
More Mimecast Advanced Email Security pricing and cost advice
"Negotiate as much as you can."
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Top Industries

By visitors reading reviews
Computer Software Company
12%
Financial Services Firm
9%
Construction Company
7%
Comms Service Provider
6%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise11
Large Enterprise14
By reviewers
Company SizeCount
Small Business4
Midsize Enterprise3
 

Questions from the Community

What is your experience regarding pricing and costs for Mimecast Email Security with Targeted Threat Protection?
Do you know anything about the pricing and cost of the Mimecast Email Security?
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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...
See all answers
What is your primary use case for Mimecast Email Security with Targeted Threat Protection?
I have been working with Mimecast Email Security.
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Earn 20 points
 

Comparisons

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Compared 44% of the time
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Compared 17% of the time
More Sophos Email Appliance [EOL] Competitors
 

Product Reports

Buyer's Guide
Mimecast Advanced Email Security
May 2026
Mimecast Advanced Email Security reportDownload Mimecast Advanced Email Security product report
Buyer's Guide
Email Security
May 2026
Sophos Email Appliance [EOL] reportDownload Sophos Email Appliance [EOL] product report
 

Also Known As

Mimecast Email Security with Targeted Threat Protection, Mimecast Web Security, Mimecast Mailbox Continuity, Email and Collaboration Threat Protection
Email Appliance
 

Overview

Mimecast Advanced Email Security offers advanced features like sandboxing, email archiving, and phishing protection. It's known for integration with Microsoft 365 and user-friendly admin management, making it a robust choice for secure communications.

Focused on safeguarding emails, Mimecast Advanced Email Security integrates seamlessly with Microsoft 365, providing features such as sandboxing, spam filtering, and email archiving. It delivers comprehensive protection against phishing, identity threats, and impersonation attempts. Administrators benefit from the ability to monitor external communications and customize configurations, enhancing email security. Users appreciate the intuitive admin console and responsive support team. Although it faces challenges in threat detection rates and administration complexity, its capabilities in email monitoring, spam filtering, and URL inspection remain valued by enterprises seeking reliable email security that supports compliance needs.

What key features should users explore?

  • Sandboxing: Analyzes attachments in a secure environment to detect threats.
  • Email Archiving: Provides secure long-term storage of emails for compliance.
  • Spam Filtering: Prevents unsolicited emails from clogging the inbox.
  • URL Inspection: Checks links in emails for malicious content.
  • Phishing Protection: Guards against deceptive tactics to protect sensitive data.

What benefits can impact ROI?

  • Regulatory Compliance: Facilitates adherence to standards such as HIPAA.
  • Integration: Enhances existing systems with seamless Microsoft 365 integration.
  • Support: Offers a responsive support team to resolve issues promptly.
  • Email Security: Improves threat prevention with effective spam and phishing protections.

Mimecast Advanced Email Security is implemented across industries to protect against email threats like phishing, spam, and malicious attachments. It serves as both a gateway and an archiving tool, supporting compliance in healthcare and finance by offering features like URL protection and data loss prevention. Enterprises leverage its capabilities to secure inbound and outbound communications effectively.

Mimecast

Sophos' purpose-built secure email gateway is an all-in-one solution for email encryption, DLP, anti-spam and threat protection. It provides advanced protection from today’s sophisticated spear phishing attacks and gives you full control over data leaving your organization via email.

Sophos
 

Sample Customers

Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Investors Savings Bank
Buyer's Guide
Secure Email Gateway (SEG)
May 2026
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