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Mimecast Email Security vs Sublime Security comparison

 

Comparison Buyer's Guide

Executive Summary

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 Email Security
Average Rating
8.0
Reviews Sentiment
6.1
Number of Reviews
31
Ranking in other categories
Office 365 Protection (3rd), Secure Email Gateway (SEG) (4th)
Sublime Security
Average Rating
9.0
Reviews Sentiment
7.2
Number of Reviews
1
Ranking in other categories
Email Security (21st)
 

Mindshare comparison

While both are Messaging and Collaboration solutions, they serve different purposes. Mimecast Email Security is designed for Secure Email Gateway (SEG) and holds a mindshare of 12.5%, down 15.0% compared to last year.
Sublime Security, on the other hand, focuses on Email Security, holds 1.6% mindshare, up 0.9% since last year.
Secure Email Gateway (SEG) Market Share Distribution
ProductMarket Share (%)
Mimecast Email Security12.5%
Microsoft Defender for Office 36527.6%
Proofpoint Email Protection21.0%
Other38.9%
Secure Email Gateway (SEG)
Email Security Market Share Distribution
ProductMarket Share (%)
Sublime Security1.6%
Microsoft Defender for Office 36511.4%
Proofpoint Email Protection8.2%
Other78.8%
Email Security
 

Featured Reviews

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.
LARK IT - PeerSpot reviewer
Easy to setup, stable and highly scalable
The ability for users to look at their own quarantine box needs improvement. So at the moment, it doesn't give you the ability to see every email that has been quarantined. No end-user has the ability to see what's being quarantined. It's only people who have access to the back-end platform that can actually see what has been quarantined. The end user doesn't know if they have an email that has been quarantined, only if they're expecting something that didn't come through. In future releases, I would just like to see that ability for users to see what's being quarantined and what's not quarantined but safe. Just those genuine false positives.

Quotes from Members

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

Pros

"Its administration console is very easy to use. The administration console is absolutely important because you interact with the platform through it."
"Mimecast certainly helped my customers reduce phishing emails."
"Based on overall experience, Mimecast Email Security is the best solution for traditional gateways."
"It does a good job for us, and its admin console is easy to use."
"The piece that is most valuable from the Mimecast standpoint will be the sandboxing feature."
"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."
"I recommend Mimecast based on customer requirements and budget."
"The product's most valuable features are impersonation protection and phishing countermeasures."
"I like its ability to detect and block."
 

Cons

"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 feature that should be included is to remove the block on the encrypted files."
"The detection rates are an area for improvement."
"From an administrative point of view, Mimecast is a little bit cumbersome and difficult. It's not something that the end-user can easily find navigate themselves."
"The tool can be challenging because it relies on rule-based configurations, especially for addressing impersonation threats. This approach requires setting up numerous rules to ensure filtering. It should work based on behavior-based analytics."
"The reaction time between a new threat being identified and Mimecast picking it up needs to be narrowed a bit."
"Its pricing can be improved. It is a bit expensive."
"I did have a problem with Mimecast. That is why I was looking for an alternative solution because their sender IP address gets poorly rated by Microsoft."
"The ability for users to look at their own quarantine box needs improvement. So at the moment, it doesn't give you the ability to see every email that has been quarantined. No end-user has the ability to see what's being quarantined. It's only people who have access to the back-end platform that can actually see what has been quarantined. The end user doesn't know if they have an email that has been quarantined, only if they're expecting something that didn't come through."
 

Pricing and Cost Advice

"The customers can select the license packages as per their requirements."
"The product price is moderate. I rate the pricing a five out of ten."
"For what it is, the product is overpriced."
"We pay monthly fees to our provider."
"The licensing costs are per-user for the product that you get with them."
"It is a bit expensive."
"Compared to the other solutions in the market, Mimecast Email Security with Targeted Threat Protection's pricing is fine."
"I'm always going to say the price needs to be lower, but it's reasonable."
"I would rate the pricing of Sublime Security as a seven out of ten. It is reasonably well-priced."
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Top Industries

By visitors reading reviews
Computer Software Company
15%
Financial Services Firm
7%
Manufacturing Company
7%
Comms Service Provider
6%
Computer Software Company
14%
Financial Services Firm
9%
Government
7%
Manufacturing Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
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?
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.
What do you like most about Sublime Security?
I like its ability to detect and block.
What is your experience regarding pricing and costs for Sublime Security?
I would rate the pricing of Sublime Security as a seven. It is reasonably well-priced.
What needs improvement with Sublime Security?
The ability for users to look at their own quarantine box needs improvement. So at the moment, it doesn't give you the ability to see every email that has been quarantined. No end-user has the abil...
 

Also Known As

Mimecast Email Security with Targeted Threat Protection
No data available
 

Overview

 

Sample Customers

Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Information Not Available
Find out what your peers are saying about Microsoft, Abnormal AI, Proofpoint and others in Secure Email Gateway (SEG). Updated: September 2025.
868,787 professionals have used our research since 2012.