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Mimecast Advanced Email Security vs Webroot Advanced Email Encryption powered by Zix comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Feb 4, 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

Mimecast Advanced Email Sec...
Ranking in Secure Email Gateway (SEG)
4th
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
31
Ranking in other categories
Office 365 Protection (3rd)
Webroot Advanced Email Encr...
Ranking in Secure Email Gateway (SEG)
13th
Average Rating
7.0
Number of Reviews
1
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of February 2026, in the Secure Email Gateway (SEG) category, the mindshare of Mimecast Advanced Email Security is 16.5%, up from 11.6% compared to the previous year. The mindshare of Webroot Advanced Email Encryption powered by Zix is 1.2%, up from 0.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Market Share Distribution
ProductMarket Share (%)
Mimecast Advanced Email Security16.5%
Webroot Advanced Email Encryption powered by Zix1.2%
Other82.3%
Secure Email Gateway (SEG)
 

Featured Reviews

HS
Email Security Engineer at Logic Infosecurity
Experience high detection and user-friendly policies with reliable email security implementation
The system is not user-friendly because you have to create policies that are mapped in a dictionary. As an IT engineer, I understand how it works, but explaining it to another IT person can be difficult. Having more user-friendly dashboards would improve the work experience. In Mimecast Email Security, checking policies in the dictionary or gateway is very complicated, and not everyone understands this process. If you examine the Check Point portal, it's user-friendly with easily accessible tabs that anyone can explore. With Mimecast Email Security, making changes might impact existing mailboxes. The portal is complicated compared to Check Point's user-friendly interface.
John Zupancic - PeerSpot reviewer
Vice President / Branch Manager / Senior Technician at Aperion Information Technologies, Inc.
Inexpensive, with good email security, but the technical support could be improved
We don't have as many problems with email security. They have some areas that could be improved. For example, we also use this solution for email encryption, which was clunky and could be improved, but the email security itself has been excellent. The web interface works well but the Outlook plug-in has been problematic. We've had to uninstall/reinstall it. On some Outlook clients (including mine), it causes Outlook to stop responding. I disabled the Outlook plug-in and only use the web interface.

Quotes from Members

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

Pros

"Due to our specialized use case, that HIPAA dictionary really comes in handy."
"The solution is pretty straightforward to use and easy to set up."
"The reviewer gave Mimecast Email Security a rating of 10 out of 10."
"What I like about the integration is that it is directly into Microsoft 365, users can use their Microsoft 365 credentials to log into the portal and access their mail."
"The product is good. To date, we have not faced any challenges."
"In the current environment that the world is in, everyone is trying to hack everyone else, so Project+ definitely helps a lot there."
"It does a good job for us, and its admin console is easy to use."
"We like the content filtering and secure messaging features."
"They do a better job of determining what's real and what's not than most of the other solutions we have tried, and it's been very painless to use."
 

Cons

"The solution is complex and not easy to use."
"They could provide a unified licensing model, including all the security features."
"While it's quick and easy, the initial setup could be more user-friendly."
"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."
"We discussed the phishing aspect, the DNS system, and the key rotation."
"Mimecast Email Security is somewhat expensive compared to the competition in the Indian market, and the local presence is lacking as they do not have a local representative currently."
"They should improve the cookies management feature."
"As a user, the user interface of the management console could be upgraded, for example."
"They have some areas that could be improved. For example, we also use this solution for email encryption, which was clunky and could be improved, but the email security itself has been excellent."
 

Pricing and Cost Advice

"The customers can select the license packages as per their requirements."
"The product has good pricing in terms of return on investment."
"It is a bit expensive."
"For what it is, the product is overpriced."
"The solution is expensive."
"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 product price is moderate. I rate the pricing a five out of ten."
"Compared to the other solutions in the market, Mimecast Email Security with Targeted Threat Protection's pricing is fine."
"In terms of pricing, I believe they provide excellent value."
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Top Industries

By visitors reading reviews
Computer Software Company
14%
Financial Services Firm
8%
Manufacturing Company
6%
Comms Service Provider
5%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business17
Midsize Enterprise7
Large Enterprise11
No data available
 

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 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...
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Also Known As

Mimecast Email Security with Targeted Threat Protection
Zix Email Encryption, ZixEncrypt
 

Overview

 

Sample Customers

Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Erie County of Pennsylvania’s Human Services Department, Justice Federal Credit Union, STAR Financial Group, Chisago County, Minn., The National Banks of Central Texas, Kentucky Retirement Systems (KRS), Frankfort, Ky, Athletico Physical Therapy, District of Columbia Retirement Board (DCRB), CIBM Bank
Find out what your peers are saying about Microsoft, Proofpoint, Abnormal AI and others in Secure Email Gateway (SEG). Updated: February 2026.
881,757 professionals have used our research since 2012.