--- title: Cisco Secure Email Threat Defense Reviews meta_title: 'Cisco Secure Email Threat Defense Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter 28 reviews by the users' company size, role or industry to find out how Cisco Secure Email Threat Defense works for a business like yours. aggregate_rating: rating_value: 4.3 review_count: 28 scale: '5' date_modified: '2026-09-29' parent_category: name: Email Security url: https://www.g2.com/categories/email-security ---

Cisco Secure Email Threat Defense Reviews & Product Details

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Cisco Secure Email Threat Defense Reviews (28)

Reviews

Cisco Secure Email Threat Defense Reviews (28)

4.3
28 reviews

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Ashutosh J.
AJ
Ashutosh J.
Senior cyber security Analyst
Enterprise (> 1000 emp.)
"Email Security Solutions"
4.5/5
What do you like best about Cisco Secure Email Threat Defense?

Detection of any phishing email by scoring the threat level Review collected by and hosted on G2.com.

What do you dislike about Cisco Secure Email Threat Defense?

AMP advance malware protection, work less during analysis Review collected by and hosted on G2.com.

CK
Carter K.
Creative Director
Small-Business (50 or fewer emp.)
"The antivirus, anti-spam and anti-phishing email program we were looking for"
5/5
What do you like best about Cisco Secure Email Threat Defense?

It is a flexible and powerful tool for email protection, we use it throughout the organization and have had no problems since. The performance of this tool is high and it has advanced security features that ensure the protection of internal and cloud-based emails from any external cyber threats. Another amazing quality is the ease with which it integrates with Office 365, such integration has been helpful in the organization. Review collected by and hosted on G2.com.

What do you dislike about Cisco Secure Email Threat Defense?

It's main and perhaps only contra is its cost, it is high compared to other tools that fulfill the same purpose, although not with the same effectiveness. Review collected by and hosted on G2.com.

Gaurav S.
GS
Gaurav S.
Sales Associate
Mid-Market (51-1000 emp.)
"The best email security service"
4.5/5
What do you like best about Cisco Secure Email Threat Defense?

Cisco is our trust if we talk about email security, it protects our inbox from spam and also scans our sent email before being sent. It can be used anywhere on premise, or cloud, That's an additional feature. The user interface is just simple and smooth. Customer support is very responsive and polite. Review collected by and hosted on G2.com.

What do you dislike about Cisco Secure Email Threat Defense?

Nothing much to dislike about the product, just the pricing could be a little lesser. Apart from this, everything is working fine and we are completely enjoying the Cisco support. Review collected by and hosted on G2.com.

Ajeet S.
AS
Ajeet S.
Senior Lead- Technical
Mid-Market (51-1000 emp.)
"Perfect Email Security solution in the market "
5/5
What do you like best about Cisco Secure Email Threat Defense?

Cisco Email Security is available for all kind if infrastructure like On Premise (Hardware/Virtual) and cloud.

The biggest advantage of ESA is integration with AMP. Effective appliance performance when use in enterprise environment. Review collected by and hosted on G2.com.

What do you dislike about Cisco Secure Email Threat Defense?

Frequent firmware patches releases increase administrator tasks. Reports are limited in terms of customization. False positive detection should reduce. Review collected by and hosted on G2.com.

ME
moses e.
store manager
Mid-Market (51-1000 emp.)
"a secured office tool"
4.5/5
What do you like best about Cisco Secure Email Threat Defense?

i like how secured cisco email security is by protecting our emails from phishing and spamming before they are sent or received. it is a reliable tool Review collected by and hosted on G2.com.

What do you dislike about Cisco Secure Email Threat Defense?

there is nothing to dislike about cisco email security as it offers a well unique feature to my organisation Review collected by and hosted on G2.com.

RS
Roberto S.
Full Stack Developer
Small-Business (50 or fewer emp.)
"I'm not afraid and I'm free of malware or hacker viruses."
5/5
What do you like best about Cisco Secure Email Threat Defense?

It protects me files and general system emails, very simple and easy to use. I am comfortable and protected at all times, eliminates spam, malware and viruses received in corporate mail. It has simple and smart features for efficient management. Review collected by and hosted on G2.com.

What do you dislike about Cisco Secure Email Threat Defense?

It would be ideal if the software could notify more detailed balances of viruses that are exposed or are arriving in the inbox of the mails. Review collected by and hosted on G2.com.

KN
Kellen N.
Customer Care Rep
Small-Business (50 or fewer emp.)
"Cisco Email Security Review - Very Secure"
5/5
What do you like best about Cisco Secure Email Threat Defense?

Having used Cisco Email Security for many years now, I can say it is the best when it comes to email security. It protects emails against spamming and unauthorized access. We no longer have to worry about viruses and malware sent in form of emails. It works perfectly. Review collected by and hosted on G2.com.

What do you dislike about Cisco Secure Email Threat Defense?

I have not experienced negative issues with v. It has been all positive all throughout for as long as I can remember Review collected by and hosted on G2.com.

Thompson C.
TC
Thompson C.
Computer Information Systems Program Coordinator
Mid-Market (51-1000 emp.)
"Awesome Email Security Product"
5/5
What do you like best about Cisco Secure Email Threat Defense?

The granularity of controls for setting up actions to take with incoming emails. Review collected by and hosted on G2.com.

What do you dislike about Cisco Secure Email Threat Defense?

The interface is a bit of a learning curve due to the amount of controls and menus. Review collected by and hosted on G2.com.

Wouter H.
WH
Wouter H.
Network Administrator
Enterprise (> 1000 emp.)
"Email Security which grows with your company."
4.5/5
What do you like best about Cisco Secure Email Threat Defense?

The best feature of the Cisco Email Security Appliance is the complete control over the entire Email process and the reputation based protection using Talos Reputation Center. Review collected by and hosted on G2.com.

What do you dislike about Cisco Secure Email Threat Defense?

There are many features for which you will need to study the manual before being able to understand their workings. Review collected by and hosted on G2.com.

Verified User in Information Technology and Services
CI
Verified User in Information Technology and Services
Mid-Market (51-1000 emp.)
Business partner of the seller or seller's competitor, not included in G2 scores.
"Robust Email Security for our tenants"
4/5
What do you like best about Cisco Secure Email Threat Defense?

We deployed Cisco ESA as a virtual appliance in our VMware environment. Actually we moved from another vendor. Cisco ESA provides really great performance, layered email protection and useful reports. There are a lot of configuration options and it is easy to administer. Review collected by and hosted on G2.com.

What do you dislike about Cisco Secure Email Threat Defense?

It is still not clear how Cisco ESA works in multi-tenant mode. We are providing security services to many customers and ability to isolate their traffic is a major requirement. As far as I know, this still should be improved. Review collected by and hosted on G2.com.

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