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Cisco Secure Email vs Mimecast Email Security comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Dec 28, 2025

Review summaries and opinions

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

ROI

Sentiment score
6.4
Cisco Secure Email enhances ROI with robust security, reducing disruptions and downtime from cyber threats, despite perceived high costs.
Sentiment score
5.5
Users have mixed ROI views on Mimecast Email Security, noting its effectiveness against threats but questioning cost-efficiency.
There is definitely a return on investment when using Mimecast, as it blocks phishing emails, reducing the risk of significant financial losses.
Senior Tech. Lead at WE
 

Customer Service

Sentiment score
7.3
Cisco Secure Email support is praised for its responsiveness and expertise, though experiences can vary based on assigned engineers.
Sentiment score
5.6
Mimecast Email Security support is helpful but has mixed reviews due to delays and reliance on indirect solutions.
Cisco's tech support can be hit or miss, depending on the engineer you get.
Cloud Partner & Solutions Architect at a tech vendor with 1,001-5,000 employees
The support is pretty decent, with a rating of eight out of ten.
Chief Information Security Officer at Abcl
Support personnel are hesitant to engage in remote sessions, preferring to share documentation via email.
Senior Tech. Lead at WE
Mimecast technical support is generally quite good.
Information Security Analyst at Enfield Central Library
I would rate my experience with technical support of Mimecast Email Security between seven and eight out of ten for their support.
Email Security Engineer at Logic Infosecurity
 

Scalability Issues

Sentiment score
7.2
Cisco Secure Email provides scalable solutions for seamless user migration and system growth, with reliable cloud service options.
Sentiment score
7.0
Mimecast Email Security is praised for adaptability and scalability, supporting various industries despite minor feature challenges.
The on-premises hardware is not very scalable, but switching to the SaaS offering is expected to improve scalability.
Chief Information Security Officer at Abcl
If Mimecast Email Security introduces API solutions, it will dominate the market.
Email Security Engineer at Logic Infosecurity
 

Stability Issues

Sentiment score
8.0
Cisco Secure Email is praised for reliability, consistent performance, easy maintenance, and high user satisfaction with stable uptime.
Sentiment score
7.5
Mimecast Email Security is reliable and stable, with minimal glitches, occasional delays, and high user ratings for performance.
Based on my experience, the stability of Cisco Secure Email is very strong.
Systems Engineer at a non-tech company with 51-200 employees
They confirm it's a good solution where only one or two rare emails get through, while the rest are properly blocked without any issues.
Email Security Engineer at Logic Infosecurity
 

Room For Improvement

Cisco Secure Email's high cost, complexity, poor interface, and limited integration impact usability, requiring AI and service enhancements.
Mimecast Email Security needs improvements in pricing, detection, complexity, user interface, support, and reducing false positives and attachment issues.
The solution should better analyze the actual content rather than only focusing on the email header or origin.
Chief Information Security Officer at Abcl
It would be beneficial to have the functionality of the Email Threat Defense integrated into the Email Security Gateway so customers don't have to buy two products for full email protection.
Systems Engineer at a non-tech company with 51-200 employees
Mimecast Email Security is somewhat expensive compared to the competition in the Indian market.
Co-Founder & VP-Sales at QuantumShield Technologies LLP
A lot of emails were missed despite being known samples.
Senior Tech. Lead at WE
Mimecast Email Security can be improved by adding some API integrations.
Email Security Engineer at Logic Infosecurity
 

Setup Cost

Cisco Secure Email is priced higher, but users find its extensive features and security benefits justify the cost.
Mimecast Email Security is often seen as costly due to user-based licensing and added fees, despite potential discounts.
Its cost is bundled with other Cisco products.
Chief Information Security Officer at Abcl
The licensing is a mess and needs sorting out.
Cloud Partner & Solutions Architect at a tech vendor with 1,001-5,000 employees
The pricing structure is good as it is user-based or email client-based, which is positive for clients.
Systems Engineer at a non-tech company with 51-200 employees
The pricing is higher for Mimecast, particularly for the Indian market, where it is considered expensive.
Senior Tech. Lead at WE
 

Valuable Features

Cisco Secure Email provides comprehensive threat management with advanced filtering, intuitive management, and seamless integration, enhancing email security effectively.
Mimecast Email Security offers strong threat protection, easy setup, seamless Microsoft 365 integration, and excellent scalability and support.
It is highly effective in catching phishing and spam emails.
Systems Engineer at a non-tech company with 51-200 employees
It also possesses multiple modules for spam detection, malware detection, and threat intelligence, which are valuable in categorizing emails and determining actions.
Chief Information Security Officer at Abcl
It covers everything through email, like antivirus, IDS, and IPS.
Cloud Partner & Solutions Architect at a tech vendor with 1,001-5,000 employees
A distinct advantage of Mimecast is its ability to block phishing and impostor attacks, which are significant threats currently.
Senior Tech. Lead at WE
One of the most useful features is the threat remediation module, which can be used to remove malicious emails that may have been delivered or manually remove them.
Information Security Analyst at Enfield Central Library
Mimecast Email Security includes the best gateway solution across all Cisco, Trend Micro, and other solutions.
Email Security Engineer at Logic Infosecurity
 

Categories and Ranking

Cisco Secure Email
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
62
Ranking in other categories
Email Security (5th), Cisco Security Portfolio (6th)
Mimecast Email Security
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
32
Ranking in other categories
Office 365 Protection (3rd), Secure Email Gateway (SEG) (4th)
 

Mindshare comparison

While both are Messaging and Collaboration solutions, they serve different purposes. Cisco Secure Email is designed for Email Security and holds a mindshare of 5.2%, down 7.2% compared to last year.
Mimecast Email Security, on the other hand, focuses on Secure Email Gateway (SEG), holds 14.4% mindshare, up 12.5% since last year.
Email Security Market Share Distribution
ProductMarket Share (%)
Cisco Secure Email5.2%
Microsoft Defender for Office 3659.6%
Proofpoint Email Protection7.9%
Other77.3%
Email Security
Secure Email Gateway (SEG) Market Share Distribution
ProductMarket Share (%)
Mimecast Email Security14.4%
Microsoft Defender for Office 36524.2%
Proofpoint Email Protection20.3%
Other41.099999999999994%
Secure Email Gateway (SEG)
 

Featured Reviews

BD
Chief Information Security Officer at Abcl
Threat intelligence with fast attack detection enables comprehensive email protection
In some cases, detection is missed, leading to false positives where genuine emails are flagged as spam. This could result in users not opening genuine emails. We have highlighted this to Cisco because sometimes phishing or marketing campaigns, which are genuine, are incorrectly flagged as spam. The solution should better analyze the actual content rather than only focusing on the email header or origin.
RP
Senior Tech. Lead at WE
Block significant threats with enhanced phishing prevention
In terms of efficacy, Proofpoint is better than Mimecast, though it's a little difficult to manage. A distinct advantage of Mimecast is its ability to block phishing and impostor attacks, which are significant threats currently. Security is a major feature where email security tools like Mimecast have delivered value by identifying and preventing phishing emails.
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879,889 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
18%
Manufacturing Company
9%
Financial Services Firm
8%
Comms Service Provider
5%
Computer Software Company
14%
Financial Services Firm
8%
Manufacturing Company
6%
Comms Service Provider
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise18
Large Enterprise25
By reviewers
Company SizeCount
Small Business17
Midsize Enterprise7
Large Enterprise11
 

Questions from the Community

What do you like most about Cisco Secure Email?
Cisco Secure Email is a budget-friendly solution.
What is your experience regarding pricing and costs for Cisco Secure Email?
The pricing structure is good as it is user-based or email client-based, which is positive for clients.
What needs improvement with Cisco Secure Email?
The user interface of the Email Security Gateway ( /products/security-gateway-reviews ) should be improved. It would be beneficial to have the functionality of the Email Threat Defense integrated i...
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.
 

Also Known As

Cisco Email Security, IronPort, Cisco Email Security, ESA, Email Security Appliances
Mimecast Email Security with Targeted Threat Protection
 

Overview

 

Sample Customers

SUNY Old Westbury, CoxHealth, City of Fullerton, Indra
Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Find out what your peers are saying about Cisco Secure Email vs. Mimecast Email Security and other solutions. Updated: January 2024.
879,889 professionals have used our research since 2012.