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Cisco Identity Services Engine (ISE) vs Cisco Secure Email 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:
 

ROI

Sentiment score
7.1
Cisco Identity Services Engine enhances security, simplifies operations, and reduces costs while boosting productivity and ensuring regulatory compliance.
Sentiment score
6.4
Cisco Secure Email enhances ROI with robust security, reducing disruptions and downtime from cyber threats, despite perceived high costs.
Direct comparisons with Forescout reveal up to 30% to 40% difference in cost savings.
Service Line Manager (Service Operations Expert) - Network Access Control at a pharma/biotech company with 10,001+ employees
We also save money because we increased security, stopped incidents, and reduced breaches and security breaches.
Cybersecurity Team Leader at EMAK For Integrated Solutions
 

Customer Service

Sentiment score
6.7
Cisco ISE support is highly rated for knowledge and responsiveness but struggles with response times and communication challenges.
Sentiment score
7.3
Cisco Secure Email support is praised for its responsiveness and expertise, though experiences can vary based on assigned engineers.
I rate the technical support as one out of ten.
Service Line Manager (Service Operations Expert) - Network Access Control at a pharma/biotech company with 10,001+ employees
Cisco support has pretty good teams for support and every time we had good answers and we could somehow solve the issues we had.
Network and Technology Information Manager at Akkodis
TAC support from Cisco is a notable feature; it provides very professional support.
Cybersecurity Team Leader at EMAK For Integrated 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
 

Scalability Issues

Sentiment score
7.3
Cisco ISE supports smooth scalability for diverse enterprises, but virtualization and hardware challenges may require strategic solutions.
Sentiment score
7.2
Cisco Secure Email provides scalable solutions for seamless user migration and system growth, with reliable cloud service options.
You can run an all-in-one deployment and switch to distributed mode as your company grows, relying on Cisco Identity Services Engine (ISE) to support your scalability needs.
Cybersecurity Team Leader at EMAK For Integrated Solutions
Factors like architecture, business nature, and legal limitations such as GDPR affect it.
Service Line Manager (Service Operations Expert) - Network Access Control at a pharma/biotech company with 10,001+ employees
However, you can have some latency issues depending on where your devices are.
Network and Technology Information Manager at Akkodis
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
 

Stability Issues

Sentiment score
7.7
Cisco ISE is stable and reliable, but large deployments may face challenges, requiring proper configuration and effective support.
Sentiment score
8.0
Cisco Secure Email is praised for reliability, consistent performance, easy maintenance, and high user satisfaction with stable uptime.
Cisco Identity Services Engine (ISE) is considered very reliable and stable.
Solution Architect, Presales Engineer at a computer software company with 51-200 employees
The stability of Cisco Identity Services Engine (ISE) is poor for certain use cases, like authentication.
Service Line Manager (Service Operations Expert) - Network Access Control at a pharma/biotech company with 10,001+ employees
Sometimes when we have upgrades or failovers with Cisco Identity Services Engine (ISE), we had some minor issues.
Network and Technology Information Manager at Akkodis
Based on my experience, the stability of Cisco Secure Email is very strong.
Systems Engineer at a non-tech company with 51-200 employees
 

Room For Improvement

Cisco ISE is hindered by complexity, compatibility issues, costly licensing, and needs improvements in usability, support, and performance.
Cisco Secure Email's high cost, complexity, poor interface, and limited integration impact usability, requiring AI and service enhancements.
The whole setup works well with Cisco access points and Cisco switches, but when you have multiple vendors in the environment, such as HP switches or access points like Aruba, you'll find they will not work well with Cisco Identity Services Engine (ISE).
Technical Services Lead at Telenet Solutions
Pricing can be more expensive compared to other vendors, and there is a significant price gap observed, which doesn't seem justified by some specific features.
Solution Architect, Presales Engineer at a computer software company with 51-200 employees
They are very poor in asset classification and should focus on improving the preauthentication profiling, especially for NAC use cases.
Service Line Manager (Service Operations Expert) - Network Access Control at a pharma/biotech company with 10,001+ employees
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
 

Setup Cost

Cisco ISE pricing is complex and costly, with strong vendor partnerships needed for discounts, favoring large enterprises over smaller businesses.
Cisco Secure Email is priced higher, but users find its extensive features and security benefits justify the cost.
Compared to other solutions like HPE ClearPass, Cisco is more costly, and the conversation suggests a possible forty percent price gap compared to competitors.
Solution Architect, Presales Engineer at a computer software company with 51-200 employees
The license costs can range between $50,000 to $100,000 per year for enterprises.
Technical Services Lead at Telenet Solutions
Cloud solutions are expensive, while on-prem setups with shared environments are cheaper but not effective.
Service Line Manager (Service Operations Expert) - Network Access Control at a pharma/biotech company with 10,001+ employees
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
 

Valuable Features

Cisco ISE excels in security, network access control, and integration, offering adaptability, scalability, and centralized management for organizations.
Cisco Secure Email provides comprehensive threat management with advanced filtering, intuitive management, and seamless integration, enhancing email security effectively.
Cisco Identity Services Engine (ISE) offers authentication using RADIUS, enhancing network security by separating and segregating networks.
Technical Services Lead at Telenet Solutions
There is value because it helps us secure the network and prevents certain things from happening which could cause financial loss.
Ag Systems & Networks Head at UNBS
The adaptability of Cisco Identity Services Engine (ISE) policy enforcement can fit to the site we have depending on which kind of devices we have on site and then the needs for authentication, granting access and then assigning each device into its correct network for segmentation.
Network and Technology Information Manager at Akkodis
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 is highly effective in catching phishing and spam emails.
Systems Engineer at a non-tech company with 51-200 employees
It covers everything through email, like antivirus, IDS, and IPS.
Cloud Partner & Solutions Architect at a tech vendor with 1,001-5,000 employees
 

Categories and Ranking

Cisco Identity Services Eng...
Ranking in Cisco Security Portfolio
1st
Average Rating
8.2
Reviews Sentiment
6.6
Number of Reviews
145
Ranking in other categories
Network Access Control (NAC) (1st)
Cisco Secure Email
Ranking in Cisco Security Portfolio
6th
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
62
Ranking in other categories
Email Security (5th)
 

Mindshare comparison

As of December 2025, in the Cisco Security Portfolio category, the mindshare of Cisco Identity Services Engine (ISE) is 22.8%, up from 22.6% compared to the previous year. The mindshare of Cisco Secure Email is 3.4%, up from 1.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Cisco Security Portfolio Market Share Distribution
ProductMarket Share (%)
Cisco Identity Services Engine (ISE)22.8%
Cisco Secure Email3.4%
Other73.8%
Cisco Security Portfolio
 

Featured Reviews

NF
Network and Technology Information Manager at Akkodis
Has improved authentication management and simplified visitor network access
The log capacity in Cisco Identity Services Engine (ISE) could be enhanced because today natively on the ISE can only have a look at the logs from the day before. You cannot search into the oldest logs; you have to use another tool for that. This can be blocking if you don't have any log consolidation solution. To do a search for an issue or something that happened two days ago, you cannot search directly in there. The capacity of Cisco Identity Services Engine (ISE) could be enhanced. Something between one week and one month for the log capacity would be nice.
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.
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Top Industries

By visitors reading reviews
Computer Software Company
12%
Manufacturing Company
11%
Financial Services Firm
9%
Government
9%
Computer Software Company
18%
Manufacturing Company
9%
Financial Services Firm
8%
Comms Service Provider
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business44
Midsize Enterprise32
Large Enterprise91
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise18
Large Enterprise25
 

Questions from the Community

Which is better - Aruba Clearpass or Cisco ISE?
Aruba ClearPass is a Network Access Control tool that gives secure network access to multiple device types. You can adapt the policies to VPN access, wired, or wireless access. You can securely ...
What are the main differences between Cisco ISE and Forescout Platform?
OK, so Cisco ISE uses 802.1X to secure switchports against unauthorized access. The drawback of this is that ISE cannot secure the port if a device does not support 802.1x. Cameras, badge readers, ...
How does Cisco ISE compare with Fortinet FortiNAC?
Cisco ISE uses AI endpoint analytics to identify new devices based on their behavior. It will also notify you if someone plugs in with a device that is not allowed and will block it. The user exper...
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...
 

Also Known As

Cisco ISE
Cisco Email Security, IronPort, Cisco Email Security, ESA, Email Security Appliances
 

Overview

 

Sample Customers

Aegean Motorway, BC Hydro, Beachbody, Bucks County Intermediate Unit , Cisco IT, Derby City Council, Global Banking Customer, Gobierno de Castilla-La Mancha, Houston Methodist, Linz AG, London Hydro, Ministry of Foreign Affairs, Molina Healthcare, MST Systems, New South Wales Rural Fire Service, Reykjavik University, Wildau University
SUNY Old Westbury, CoxHealth, City of Fullerton, Indra
Find out what your peers are saying about Cisco Identity Services Engine (ISE) vs. Cisco Secure Email and other solutions. Updated: December 2025.
879,310 professionals have used our research since 2012.