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Cisco Umbrella vs Mimecast Advanced Email Security comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jun 2, 2026

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
7.0
Cisco Umbrella delivers high ROI by saving time, enhancing security, and integrating smoothly, leading to increased productivity and satisfaction.
Sentiment score
5.1
Mimecast Advanced Email Security provides cost-effective, high-level protection, with acknowledged ROI and justified purchasing despite support and stability issues.
Cisco is a big brand in the networking domain, but in security, they are pushing a lot and improving day by day.
Chief Technology Officer at Binary Global Limited
From my point of view, the biggest return on investment when using the solution is that it makes it a lot easier to delegate some of the tasks that were traditionally used, such as building policies on the firewalls and doing it through Cisco Umbrella.
Network Engineer at a tech consulting company with 501-1,000 employees
The biggest return on investment when using Cisco Umbrella for me is the ease of use of the fact that we've deployed this with our Cisco VPN Secure Client, so every computer has the Umbrella module in it.
Senior Network Engineer at Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.
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
The ROI which companies see should be able to justify buying Mimecast Advanced Email Security.
Solution Architect Cybersecurity at Microland Limited
The biggest impact Mimecast Advanced Email Security has had is on the cybersecurity environment, being the first to scan emails for malicious content.
Information Security Sepcialist at Transnet
 

Customer Service

Sentiment score
7.8
Cisco Umbrella support is praised for quick resolutions, professional service, and effective technical guidance despite occasional delays.
Sentiment score
5.6
Mimecast Advanced Email Security provides responsive support but could improve flexibility; subscribers appreciate fast responses despite reduced direct interaction.
I would rate customer support ten out of ten due to the excellent assistance throughout the POC process.
Manager Cyber Security Department at Mana
Cisco's support is fantastic, providing assistance when needed, especially during the initial installation process.
Director at Infosonik Systems Ltd
If I don't need to go to support all the time, that means the product is working fine, so I'm very happy with them.
Network Engineer at a tech consulting company with 501-1,000 employees
Support personnel are hesitant to engage in remote sessions, preferring to share documentation via email.
Senior Tech. Lead at WE
The customer support for Mimecast Advanced Email Security is excellent.
Manager - EUC at Finthrive
We instantly get customer support from Mimecast Advanced Email Security whenever there is a requirement.
System Engineer II at a media company with 5,001-10,000 employees
 

Scalability Issues

Sentiment score
8.0
Cisco Umbrella efficiently supports scalability for businesses of all sizes with seamless adaptation and minimal resource demand.
Sentiment score
7.0
Mimecast Advanced Email Security offers seamless scalability and adaptability for organizations of all sizes, efficiently handling diverse user demands.
Cisco Umbrella scales incredibly with the growing needs of my organization.
Network Engineer at a construction company with 1,001-5,000 employees
Cisco Umbrella scales really well with the growing needs of my company, bringing the ability to ensure that people are safe and connected.
Senior Network Engineer at Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.
Cisco Umbrella scales effectively with the growing needs of my company; it's excellent, and I have experienced no issues.
Senior Network Engineer at Boys Town
It handles email flow very smoothly, and we never face any issues with email delivery as our organization grows or email volume increases.
System Engineer II at a media company with 5,001-10,000 employees
If Mimecast Email Security introduces API solutions, it will dominate the market.
Email Security Engineer at Logic Infosecurity
While our user base remains around 2,200, I believe it can adapt to much larger requirements as needed, based on discussions with others managing larger organizations.
Manager - EUC at Finthrive
 

Stability Issues

Sentiment score
8.2
Cisco Umbrella offers reliable, stable performance with excellent uptime, effective security features, and minimal disruptions for enterprise needs.
Sentiment score
7.7
Mimecast Advanced Email Security offers high stability with minimal issues, maintaining fast, reliable, and effective threat protection over time.
I have not experienced any major stability issues with Cisco Umbrella.
Director at Infosonik Systems Ltd
Cisco Umbrella Secure Access is pretty stable in my mind, and we have not seen many glitches that would have interrupted services at customer locations.
Chief Technology Officer at Binary Global Limited
The stability and reliability of the Cisco Umbrella platform have been great.
Senior Network Engineer at Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.
Mimecast Advanced Email Security is very stable, reliable, and quite accurate.
SOC L2 Analyst at a tech services 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
When it comes to stability and reliability, we have not faced any notable issues with Mimecast Advanced Email Security for our customers.
Senior Consultant at a tech vendor with 10,001+ employees
 

Room For Improvement

Cisco Umbrella users seek better endpoint integration, simplified licensing, improved support, enhanced security features, and easier system compatibility.
Mimecast Advanced Email Security needs better user interface, customer support, pricing, and improved handling of false positives and phishing.
Making it more flexible and easy to deploy, particularly when integrating with other technologies like Active Directory and proxies, would be beneficial.
Manager Cyber Security Department at Mana
The product can only shield a small area, making it less effective for larger spaces or multiple users.
Director at Infosonik Systems Ltd
I have to write an email to Umbrella support to get assistance, unlike the other products where I can call the Cisco technical assistance center and get an engineer.
CTO at Next Technologies Ltd
When you buy an XDR provider, they give you a complete holistic story around it, showing what has happened, which email somebody has clicked on, whether there have been any changes, and whether there is any network activity.
Solution Architect Cybersecurity at Microland Limited
Instead of reactive measures, it could proactively identify spam domains and prevent them from derailing mail flow.
Senior Consultant at a tech vendor with 10,001+ employees
A lot of emails were missed despite being known samples.
Senior Tech. Lead at WE
 

Setup Cost

Cisco Umbrella pricing varies in cost-effectiveness based on features, with flexible licensing and potential discounts for certain partners.
Mimecast Advanced Email Security is often viewed as expensive, with costs per user and extra charges for features.
We've bundled that with our firewall stuff and our VPN, which brings the price down and adds the ability to grow.
Senior Network Engineer at Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.
The only cost associated is the license cost unless additional solutions need to be integrated with Umbrella, which would incur extra costs.
Director at Infosonik Systems Ltd
The prices need to be lower as the current pricing is exceedingly high.
Network Solutions Architect at a financial services firm with 10,001+ employees
The pricing is higher for Mimecast, particularly for the Indian market, where it is considered expensive.
Senior Tech. Lead at WE
Regarding the price, I think that in terms of similar products, it is pretty much in the same line, so I think it's reasonable.
IT Manager at a logistics company with 201-500 employees
Overall, my experience with pricing, setup costs, and licensing was smooth.
Manager - EUC at Finthrive
 

Valuable Features

Cisco Umbrella provides DNS security, integration, and user management, enhancing protection for hybrid work environments and remote users.
Mimecast Advanced Email Security provides comprehensive email protection with AI-driven analysis and seamless Microsoft 365 integration for enhanced safety.
The DNS layer security provided by Cisco Umbrella is very effective for our security posture, offering us vast improvements in visibility over DNS queries and potential threats.
Manager Cyber Security Department at Mana
The most valuable feature of Cisco Umbrella is its DNS security.
Network Solutions Architect at a financial services firm with 10,001+ employees
The best possible thing is that it is very easy to deploy, easy to configure, and very fast to get onboarded with a customer because this is a cloud-based service.
Chief Technology Officer at Binary Global Limited
There was a signature phishing scam on the internet, but Mimecast Advanced Email Security caught it before it came to fruition and instantly blocked that signature-based phishing scam.
System Engineer II at a media company with 5,001-10,000 employees
It easily generates reports about the kinds of emails coming in weekly and classifies them into various categories, making it very helpful to analyze and ensure our email gateway remains safe and secure by updating all security patches.
Senior Managing Consultant at a tech vendor with 10,001+ employees
The best features of Mimecast Advanced Email Security are strong phishing and spam filtering, URL malicious link protection, attachment inspection, impersonation and business email compromise protection, flexible email security policies, and good visibility into the email activity.
SOC L2 Analyst at a tech services company with 51-200 employees
 

Categories and Ranking

Cisco Umbrella
Average Rating
8.8
Reviews Sentiment
7.2
Number of Reviews
124
Ranking in other categories
Secure Web Gateways (SWG) (1st), Internet Security (1st), Cloud Access Security Brokers (CASB) (2nd), Domain Name System (DNS) Security (1st), Cisco Security Portfolio (3rd)
Mimecast Advanced Email Sec...
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), Secure Email Gateway (SEG) (3rd)
 

Mindshare comparison

Cisco Umbrella and Mimecast Advanced Email Security aren’t in the same category and serve different purposes. Cisco Umbrella is designed for Domain Name System (DNS) Security and holds a mindshare of 16.5%, down 23.5% compared to last year.
Mimecast Advanced Email Security, on the other hand, focuses on Secure Email Gateway (SEG), holds 14.1% mindshare, up 12.8% since last year.
Domain Name System (DNS) Security Mindshare Distribution
ProductMindshare (%)
Cisco Umbrella16.5%
Palo Alto Networks DNS Security10.2%
Infoblox Advanced DNS Protection6.2%
Other67.1%
Domain Name System (DNS) Security
Secure Email Gateway (SEG) Mindshare Distribution
ProductMindshare (%)
Mimecast Advanced Email Security14.1%
Proofpoint Email Protection18.0%
Microsoft Defender for Office 36513.9%
Other54.0%
Secure Email Gateway (SEG)
 

Featured Reviews

SS
Sr. Technical Executive at a computer software company with 11-50 employees
Has required extensive customization for non-technical users and still needs better simplification
Customization for basic users can be complex, as it is targeted toward only technical users. It would be beneficial if Cisco simplifies the customization process while still ensuring strong security to prevent unauthorized access. Simplifying the customization part could enhance Cisco Umbrella, but overall, it is a good solution for me.
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.
report
Use our free recommendation engine to learn which Domain Name System (DNS) Security solutions are best for your needs.
913,076 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
14%
Financial Services Firm
8%
Manufacturing Company
8%
Outsourcing Company
8%
Outsourcing Company
10%
Computer Software Company
10%
Financial Services Firm
9%
Construction Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business50
Midsize Enterprise31
Large Enterprise51
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise13
Large Enterprise23
 

Questions from the Community

Which is the better security solution - Cisco Umbrella or Zscaler?
Cisco Umbrella and Zscaler Internet Access are two broad-spectrum Internet security solutions that I have tried. Zscaler Internet Access is a good option for carrying out multiple security functi...
Which is the better security solution - Cisco Umbrella or Microsoft Cloud App Security?
Cisco Umbrella is an integral component of the Cisco SASE architecture. It integrates security in a single, cloud-native solution, unifying multiple features like DNS-layer security, threat intelli...
What is your experience regarding pricing and costs for Cisco Umbrella?
The pricing for Cisco Umbrella is fair compared to other platforms out there for DNS security. We acquired it as a bundle with other Cisco purchases.
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

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

Overview

 

Sample Customers

Chart Industries, City of Aspen, Eastern Mountain Sports, FLEXcon, George Washington University, Jackson Municipal Airport Authority, Ohio Public Library Information Network, PTC, Richland Community College, Smart Motors, Tulane University, VeriClaim
Hewlett-Packard Company (HP), Cushman and Wakefield, PIB Group, Swissport
Find out what your peers are saying about Cisco, Palo Alto Networks, Infoblox and others in Domain Name System (DNS) Security. Updated: August 2026.
913,076 professionals have used our research since 2012.