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Mimecast Email and Collaboration Threat Protection vs Trustwave Secure Email Gateway comparison

Mimecast and LevelBlue are both solutions in the Secure Email Gateway (SEG) category. Mimecast is ranked #3 with an average rating of 8.3, while LevelBlue is ranked #14. Mimecast holds a 17.1% mindshare in SEG, compared to LevelBlue’s 1.1% mindshare. Additionally, 92% of Mimecast users are willing to recommend the solution, compared to 100% of LevelBlue users who would recommend it.
Mimecast Email and Collabor...
Read 39 Mimecast Email and Collaboration Threat Protection reviews
  • 6,951 Views
  • 2,224 Comparison Views
92% willing to recommend
Trustwave Secure Email Gateway
Read 2 Trustwave Secure Email Gateway reviews
  • 316 Views
  • 205 Comparison Views
100% willing to recommend
 

Comparison Buyer's Guide

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Executive SummaryUpdated on Feb 11, 2026

Mimecast Advanced Email Security and Trustwave Secure Email Gateway compete in the email security domain. Mimecast has the upper hand with its robust feature set and ease of use, whereas Trustwave excels in advanced threat protection.

Features: Mimecast offers advanced threat protection, content control, and DLP features. Trustwave focuses on threat intelligence and adaptive security measures, offering comprehensive threat intelligence tools.

Ease of Deployment and Customer Service: Mimecast's cloud-based model simplifies deployment with proactive customer service. Trustwave's hybrid model provides flexibility but may need more initial setup.

Pricing and ROI: Mimecast offers a straightforward pricing model resulting in strong ROI. Trustwave is potentially higher in cost but provides extensive threat protection valued by security-focused organizations.

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To learn more, read our detailed Mimecast Email and Collaboration Threat Protection vs. Trustwave Secure Email Gateway Report (Updated: February 2026).
Buyer's Guide
Mimecast Email and Collaboration Threat Protection vs. Trustwave Secure Email Gateway
February 2026
Download the complete report
Helped 885,311 peers since 2012

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 and Collabor...
Ranking in Secure Email Gateway (SEG)
3rd
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
39
Ranking in other categories
Email Archiving (2nd), Secure Web Gateways (SWG) (19th), Office 365 Protection (2nd)
Trustwave Secure Email Gateway
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
 

Mindshare comparison

As of March 2026, in the Secure Email Gateway (SEG) category, the mindshare of Mimecast Email and Collaboration Threat Protection is 17.1%, up from 11.1% compared to the previous year. The mindshare of Trustwave Secure Email Gateway is 1.1%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Mindshare Distribution
ProductMindshare (%)
Mimecast Email and Collaboration Threat Protection17.1%
Trustwave Secure Email Gateway1.1%
Other81.8%
Secure Email Gateway (SEG)
 

Featured Reviews

HS
Test Logix
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.
Read full review
FA
Farooq Akbar
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.
Read full review

Quotes from Members

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

Pros

"In terms of technical superiority and the product itself, there are no complaints."
"Mimecast certainly helped my customers reduce phishing emails."
"Mimecast is pretty good, even if you're on Office 365."
"My advice to those considering this product would be to go for it."
"Based on overall experience, Mimecast Email Security is the best solution for traditional gateways."
"Mimecast Mailbox Continuity helps companies continue to move."
"It's good, it keeps the spam out."
"In the current environment that the world is in, everyone is trying to hack everyone else, so Project+ definitely helps a lot there."
More Mimecast Email and Collaboration Threat Protection pros
"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."
"The product's most valuable features are spam protection and artificial intelligence."
 

Cons

"The interface isn't the best. How everything works on the back end is confusing."
"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."
"While it's quick and easy, the initial setup could be more user-friendly."
"Its pricing can be improved. It is a bit expensive."
"External security features need improvement."
"The attachment scanning feature doesn't work properly."
"The differentiation between bulk spam mail and campaign-related mail could be improved."
"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."
More Mimecast Email and Collaboration Threat Protection cons
"There is room for improvement in GUI because it is a bit old-fashioned."
"The technical support services and stability need improvement as well."
 

Pricing and Cost Advice

"The price of Mimecast Mailbox Continuity is expensive."
"I'm always going to say the price needs to be lower, but it's reasonable."
"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."
"The product has good pricing in terms of return on investment."
"The solution is expensive."
"For what it is, the product is overpriced."
"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."
"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."
More Mimecast Email and Collaboration Threat Protection pricing and cost advice
"It is a cost-effective product."
"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."
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885,311 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
12%
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 Business19
Midsize Enterprise11
Large Enterprise13
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.
See all answers
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?
See all answers
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
Ask a question
Earn 20 points
 

Comparisons

Check Point Harmony Email & Collaboration vs Mimecast Email and Collaboration Threat Protection Logo
Check Point Harmony Email & Collaboration vs Mimecast Email and Collaboration Threat Protection
Compared 19% of the time
Proofpoint Email Protection vs Mimecast Email and Collaboration Threat Protection Logo
Proofpoint Email Protection vs Mimecast Email and Collaboration Threat Protection
Compared 10% of the time
Microsoft Defender for Office 365 vs Mimecast Email and Collaboration Threat Protection Logo
Microsoft Defender for Office 365 vs Mimecast Email and Collaboration Threat Protection
Compared 10% of the time
Barracuda Email Protection vs Mimecast Email and Collaboration Threat Protection Logo
Barracuda Email Protection vs Mimecast Email and Collaboration Threat Protection
Compared 6% of the time
Abnormal Security vs Mimecast Email and Collaboration Threat Protection Logo
Abnormal Security vs Mimecast Email and Collaboration Threat Protection
Compared 5% of the time
More Mimecast Email and Collaboration Threat Protection Competitors
Barracuda Email Security Gateway vs Trustwave Secure Email Gateway Logo
Barracuda Email Security Gateway vs Trustwave Secure Email Gateway
Compared 38% of the time
Microsoft Exchange Online Protection (EOP) vs Trustwave Secure Email Gateway Logo
Microsoft Exchange Online Protection (EOP) vs Trustwave Secure Email Gateway
Compared 32% of the time
Microsoft Defender for Office 365 vs Trustwave Secure Email Gateway Logo
Microsoft Defender for Office 365 vs Trustwave Secure Email Gateway
Compared 31% of the time
More Trustwave Secure Email Gateway Competitors
 

Product Reports

Buyer's Guide
Mimecast Email and Collaboration Threat Protection
March 2026
Mimecast Email and Collaboration Threat Protection reportDownload Mimecast Email and Collaboration Threat Protection product report
Buyer's Guide
Secure Email Gateway (SEG)
February 2026
Trustwave Secure Email Gateway reportDownload Trustwave Secure Email Gateway product report
 

Also Known As

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

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

Protecting your email environment against spam, malware, phishing attacks, business email compromise, account takeover, ransomware and more is one of your top priorities. Trustwave Secure Email Gateway (SEG) multi-layered intelligence and detection engine performs deep analysis of your inbound email traffic, in real-time, to protect your users from cyber threats, enables you to integrate the workflow of your email content into business processes , while scrutinizing outbound email traffic to prevent your proprietary data, intellectual property, confidential documents and financial records from electronically leaving the building.

LevelBlue
 

Sample Customers

Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Information Not Available
Buyer's Guide
Mimecast Email and Collaboration Threat Protection vs. Trustwave Secure Email Gateway
February 2026
Free Report: Mimecast Email and Collaboration Threat Protection vs. Trustwave Secure Email Gateway
Find out what your peers are saying about Mimecast Email and Collaboration Threat Protection vs. Trustwave Secure Email Gateway and other solutions. Updated: February 2026.
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We monitor all Secure Email Gateway (SEG) reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.