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Cisco Duo 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
6.4
Cisco Duo enhances productivity and security while reducing costs and breaches, proving cost-effective despite initial setup challenges.
Sentiment score
6.1
Cisco Secure Email is valued for security and efficiency, though financial benefits are mixed and hard to quantify.
Not having MFA means you cannot put a price tag on that because you will be hit with ransomware immediately.
Director at a tech vendor with 10,001+ employees
I think Cisco Duo offers a good return on investment for startups, newer organizations, or those utilizing cloud-based applications.
Identity and Access Management Principal at Mobily
I have not seen ROI with Cisco Duo; probably the opposite, because it impedes productivity time to be able to get into the system.
Network Engineer at West Kentucky Rural Electric Cooperative Corporation, Inc.
 

Customer Service

Sentiment score
6.8
Cisco Duo's customer service is efficient and knowledgeable, with high satisfaction despite occasional initial support delays.
Sentiment score
7.3
Cisco Secure Email's superior customer service, marked by prompt, reliable support, is rated highly over competitors like Fortinet.
They got back to us quickly, were nice, and gave us what we needed.
Infrastructure Engineer at a government with 501-1,000 employees
I would rate their support 10 out of 10.
Senior Network Engineer Specialist at Zenith Comp Co.,Ltd.
I would rate support for Cisco Duo a 10, as I have never had a negative experience.
Information Technology Contractor at Insight global
Regarding my interaction with the technical support of Cisco Secure Email, it was zero downtime for the mail production.
Technical Associate Network Security at Valuepoint Systems
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
7.7
Cisco Duo's cloud-based infrastructure offers seamless scalability and flexible licensing, efficiently supporting diverse and expanding user bases.
Sentiment score
7.3
Cisco Secure Email provides flexible scalability and security enhancements, supporting large setups with positive user experiences and expansion options.
In my last contracting position, it was a large one for a major worldwide airline that had hundreds of thousands of devices that could use Cisco Duo, and it scaled very well.
Information Technology Contractor at Insight global
You would not need many more engineers to manage Cisco Duo even if we scale up to 500 employees because it is so simple to manage.
Manager, Customer Success at SRC.SI sistemske integracije d.o.o.
Cisco Duo is scalable for organizational growth.
Technical Consultant at a tech vendor with 10,001+ employees
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
My thoughts on the scalability level of Cisco Secure Email is nine because of the delay in making a configuration and the slowness in the console.
Technical Associate Network Security at Valuepoint Systems
 

Stability Issues

Sentiment score
8.2
Cisco Duo is praised for reliable performance, minimal outages, prompt notifications, and effective support, with disruptions rarely being internal.
Sentiment score
8.0
Cisco Secure Email is valued for stability and reliability, with minimal issues and efficient operation, requiring minimal maintenance.
We have not had any Cisco Duo outages across all the companies I have worked for that utilize Cisco Duo.
Senior Engineer at Frontline Fighter Ltd
The stability has been excellent.
Manager, Customer Success at SRC.SI sistemske integracije d.o.o.
I did not notice any downtime or crashes with Cisco Duo.
CTO at Red IT Solutions
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 Duo requires enhancements in integration, pricing, UI, documentation, authentication methods, AI features, and update speed.
Cisco Secure Email faces complex UI, integration issues, high costs, and lacks advanced features, affecting usability and scalability.
If you don't have internet access, you can't access your computer, only local access is available.
Security and Network Team Lead
It lacks some dynamic identity management features compared to other products such as SailPoint.
Senior Iam Associate at Cognizant
Cisco should allow easier integration with third-party equipment because Cisco's own equipment is expensive.
Procurement Officer at Emerging Systems
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
It may take nearly an hour to get back to normal while configuring policies.
Technical Associate Network Security at Valuepoint Systems
 

Setup Cost

Cisco Duo offers user-based pricing with straightforward setup, while Microsoft integration can be a competitive consideration for some.
Cisco Secure Email is costly yet valued for features, with variable pricing based on factors like environment and user count.
The pricing is acceptable to them.
Vice President at Next Info Tech Solutions Inc
Their website lists $3 per month per user for the Essential license.
Senior Network Engineer Specialist at Zenith Comp Co.,Ltd.
One of my customers recently received a billing statement charging 3,600 US dollars for 100 users for one year.
Sr. Network Security Engineer at Topnet Internet Services Provider. Riyadh, Saudi A
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 Duo offers simplicity, integration, and security with features like passwordless authentication, intuitive management, and phishing-resistant measures.
Cisco Secure Email offers advanced protection, integration, and user-friendly management, enhancing security against malware, spam, phishing, and ransomware.
From a management perspective, I appreciate that we can enroll or control devices on the back end for people who get a new phone and forget to handle Cisco Duo properly and need to add a new device.
Network Engineer at a educational organization with 501-1,000 employees
Our company benefits from all those features of Cisco Duo with confidence, and we feel very secure with it in terms of authentication of our logins.
Vice President at Next Info Tech Solutions Inc
The benefit of having a complete passwordless environment in our organization is that it's gotten people away from using the sticky note under their keyboard - which is a huge problem.
Director, Technology at Deer Creek High School
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
The integration of Cisco AMP for Advanced Malware Protection with Cisco Secure Email has helped our organization's security posture.
Technical Associate Network Security at Valuepoint Systems
 

Categories and Ranking

Cisco Duo
Ranking in Cisco Security Portfolio
1st
Average Rating
8.8
Reviews Sentiment
7.0
Number of Reviews
116
Ranking in other categories
Single Sign-On (SSO) (3rd), Authentication Systems (2nd), Access Management (3rd), ZTNA as a Service (3rd), Multi-Factor Authentication (MFA) (1st)
Cisco Secure Email
Ranking in Cisco Security Portfolio
6th
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
63
Ranking in other categories
Email Security (5th)
 

Mindshare comparison

As of March 2026, in the Cisco Security Portfolio category, the mindshare of Cisco Duo is 7.5%, up from 5.6% compared to the previous year. The mindshare of Cisco Secure Email is 4.3%, up from 1.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Cisco Security Portfolio Mindshare Distribution
ProductMindshare (%)
Cisco Duo7.5%
Cisco Secure Email4.3%
Other88.2%
Cisco Security Portfolio
 

Featured Reviews

Charles Slaustas - PeerSpot reviewer
Information Technology Contractor at Insight global
Supports seamless authentication for users across multiple organizations and personal portals
The features I use in Cisco Duo include Duo Pushes to confirm my identity to the device, and eventually as MFA security was increased, I actually had to use exchange passcodes. Sometimes, I have to go into the site and get into Cisco Duo to retrieve the passcode, and many of them have been two-factor, where the sites send a passcode that I have to enter into Cisco Duo. It has been more of the latter. I have not seen issues with lagging or crashing on Cisco Duo's end; it was usually on the client end, often because someone set up a bad upgrade or there were connection issues with the Cisco Duo cloud through the administrative site.
KS
Technical Associate Network Security at Valuepoint Systems
Email security has protected financial data and provides clear tracking for every branch message
The areas of Cisco Secure Email that could be improved or enhanced are the slowness in the console. I don't think it was a database error or something, but we feel some slowness in configuring DLP and other content filters compared to other consoles. It may have been due to on-premises, but it was much noisy at some times while configuring DLP. When we tried to configure a DLP policy, the console became much slower. In that case, we cannot see what had happened in the mail which was blocked at that time. It may take nearly an hour to get back to normal while configuring policies. That is the major issue in the product.
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Top Industries

By visitors reading reviews
Manufacturing Company
11%
Financial Services Firm
8%
Comms Service Provider
8%
Computer Software Company
7%
Computer Software Company
10%
Manufacturing Company
10%
Financial Services Firm
8%
Government
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business41
Midsize Enterprise24
Large Enterprise54
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise18
Large Enterprise26
 

Questions from the Community

How does Duo Security compare with Microsoft Authenticator?
We switched to Duo Security for identity verification. We’d been using a competitor but got the chance to evaluate Duo for 30 days, and we could not be happier. Duo Security is easy to configure a...
What is your experience regarding pricing and costs for Duo Security?
I cannot speak to the financial planning of the organization, but I can confirm that Cisco Duo falls within the security budget that has been allocated to us.
What needs improvement with Duo Security?
Areas that have room for improvement in Cisco Duo include pricing, as Cisco is quite expensive, and the fact that Cisco Duo relies heavily on external identity providers such as Active Directory or...
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 areas of Cisco Secure Email that could be improved or enhanced are the slowness in the console. I don't think it was a database error or something, but we feel some slowness in configuring DLP ...
 

Also Known As

Duo Security
Cisco Email Security, IronPort, Cisco Email Security, ESA, Email Security Appliances
 

Overview

 

Sample Customers

Information Not Available
SUNY Old Westbury, CoxHealth, City of Fullerton, Indra
Find out what your peers are saying about Cisco Duo vs. Cisco Secure Email and other solutions. Updated: February 2026.
885,311 professionals have used our research since 2012.