No more typing reviews! Try our Samantha, our new voice AI agent.

LevelBlue MailMarshal vs Mimecast Advanced Email Security comparison

Why PeerSpot?
 

Comparison Buyer's Guide

Executive SummaryUpdated on Sep 24, 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

LevelBlue MailMarshal
Ranking in Secure Email Gateway (SEG)
14th
Average Rating
7.0
Reviews Sentiment
7.0
Number of Reviews
2
Ranking in other categories
No ranking in other categories
Mimecast Advanced Email Sec...
Ranking in Secure Email Gateway (SEG)
3rd
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
48
Ranking in other categories
Email Archiving (2nd), Email Security (5th), Office 365 Protection (2nd)
 

Mindshare comparison

As of September 2026, in the Secure Email Gateway (SEG) category, the mindshare of LevelBlue MailMarshal is 1.7%, up from 0.8% compared to the previous year. The mindshare of Mimecast Advanced Email Security is 14.1%, up from 12.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Mindshare Distribution
ProductMindshare (%)
Mimecast Advanced Email Security14.1%
Trustwave Secure Email Gateway1.7%
Other84.2%
Secure Email Gateway (SEG)
 

Featured Reviews

FA
Cloud & Systems Admin at Service Management Group, Inc.
Offers clear vision on the clear side of what is being blocked and easy to use but a bit old-fashioned GUI
I would rate my experience with the initial setup a four out of ten when one is difficult, and ten is easy. It's difficult initially since it's an on-premise solution. So it's a bit difficult. So the initial assessment took a few days, and then the deployment was a couple of days. It is on-prem. That is also one of the improvements you need to make on the cloud. Most of the people like things to be on the cloud. You don't have the burden of setting up things on-premise.
Avinash Mishra - PeerSpot reviewer
Manager - EUC at Finthrive
Advanced email filtering has blocked massive spam volumes and prevents unauthorized data leaks
Improvements for Mimecast Advanced Email Security include enhancing the user interface and accessibility, particularly regarding admin capabilities to add or modify user accounts. Streamlining this could improve overall usability and security management for users. Reporting is another area needing improvement in Mimecast Advanced Email Security, as the reports provided are not very easy to decipher. With artificial intelligence being integrated into various tools including Mimecast Advanced Email Security, I believe there is potential to enhance functionality, enabling users to ask specific questions and retrieve concise answers instead of overwhelming data. I choose a nine for Mimecast Advanced Email Security because improvements such as better user interface and artificial intelligence integration features would greatly enhance its usability. While no tool is perfect, these adjustments could greatly elevate Mimecast Advanced Email Security's capabilities.

Quotes from Members

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

Pros

"The product's most valuable features are spam protection and artificial intelligence."
"I like that it doesn't hold emails for any reason; it sends out notifications to the user as well as administrators. So we have a clear vision on the clear side of what is being blocked and in time as well."
"We're now certain business-critical mail is perfectly protected in multiple ways."
"I would rate Mimecast Email Security a nine out of ten."
"URL inspection works pretty well."
"My advice for others looking into using Mimecast Advanced Email Security is that they can strengthen their security very well if they choose to go with it."
"We like Mimecast's spam filtering. The email signature feature is also a big plus for our users."
"It's good, it keeps the spam out."
"The security is pretty good, and that's why we're going to upgrade to an even more advanced package. We used it when we had a power issue, and it works. It has been pretty reliable, and the support has been quite good."
"Mimecast Advanced Email Security has state-of-the-art features and is very sophisticated compared to other partners."
 

Cons

"The technical support services and stability need improvement as well."
"There is room for improvement in GUI because it is a bit old-fashioned."
"As for areas for improvement within Mimecast Web Security, I believe there is quite a lot that can be improved."
"As an area of improvement for Mimecast Advanced Email Security, I would like to see enhancements in capabilities to eliminate false positives even before emails hit the mailbox, leveraging AI functionalities."
"For improvement, I would say some of the catalogs, while navigating, were a little tricky."
"The attachment scanning feature doesn't work properly."
"The interface isn't the best. How everything works on the back end is confusing."
"The price could be better, it should be reduced."
"Improvements for Mimecast Advanced Email Security include enhancing the user interface and accessibility, particularly regarding admin capabilities to add or modify user accounts."
"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."
 

Pricing and Cost Advice

"The pricing is in the middle. Compared to other products, it should be five out of ten, where one is cheap and ten is expensive."
"It is a cost-effective product."
"Its price is in the middle range. It is a structured licensing model where there are various components that you can add or choose to add or not."
"The product price is moderate. I rate the pricing a five out of ten."
"It's an expensive solution."
"The customers can select the license packages as per their requirements."
"The solution is expensive."
"On a scale of one to ten, where one is cheap, and ten is expensive, I rate the pricing a ten."
"The price of Mimecast Mailbox Continuity is expensive."
"The licensing costs are per-user for the product that you get with them."
report
Use our free recommendation engine to learn which Secure Email Gateway (SEG) solutions are best for your needs.
914,109 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
No data available
Outsourcing Company
10%
Computer Software Company
10%
Financial Services Firm
9%
Construction Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise13
Large Enterprise23
 

Questions from the Community

Ask a question
Earn 20 points
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...
 

Also Known As

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

Overview

 

Sample Customers

Information Not Available
Hewlett-Packard Company (HP), Cushman and Wakefield, PIB Group, Swissport
Find out what your peers are saying about LevelBlue MailMarshal vs. Mimecast Advanced Email Security and other solutions. Updated: August 2026.
914,109 professionals have used our research since 2012.