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Avanan vs Microsoft Defender for Office 365 comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Feb 8, 2026

Review summaries and opinions

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

Categories and Ranking

Cloudflare One
Sponsored
Ranking in Email Security
20th
Average Rating
8.8
Reviews Sentiment
6.7
Number of Reviews
22
Ranking in other categories
Secure Web Gateways (SWG) (15th), Data Loss Prevention (DLP) (21st), Cloud Access Security Brokers (CASB) (11th), Distributed Denial-of-Service (DDoS) Protection (7th), Software Defined WAN (SD-WAN) Solutions (13th), Access Management (12th), Bot Management (3rd), ZTNA as a Service (8th), ZTNA (3rd), Secure Access Service Edge (SASE) (10th), Remote Browser Isolation (RBI) (3rd)
Avanan
Ranking in Email Security
14th
Average Rating
9.2
Reviews Sentiment
7.8
Number of Reviews
18
Ranking in other categories
Data Loss Prevention (DLP) (27th)
Microsoft Defender for Offi...
Ranking in Email Security
2nd
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
60
Ranking in other categories
Email Archiving (1st), Advanced Threat Protection (ATP) (2nd), Microsoft Security Suite (9th), Secure Email Gateway (SEG) (1st)
 

Mindshare comparison

As of March 2026, in the Email Security category, the mindshare of Cloudflare One is 1.5%, down from 1.8% compared to the previous year. The mindshare of Avanan is 2.7%, down from 3.9% compared to the previous year. The mindshare of Microsoft Defender for Office 365 is 8.8%, down from 13.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Mindshare Distribution
ProductMindshare (%)
Microsoft Defender for Office 3658.8%
Avanan2.7%
Cloudflare One1.5%
Other87.0%
Email Security
 

Featured Reviews

CV
Network Architect at IP Dimension
Cloud security has improved remote access and has reduced costs for smaller client sites
I have used Cloudflare One's Identity-Aware Proxy, and it is quite straightforward from what I have seen so far. The app registration on the Azure side integrates fully into Cloudflare, and I am very satisfied with that part because it is easy to set up. The integration of Cloudflare One's Secure Web Gateway and Zero Trust Network Access works without any issues. That part is pretty automatic, and if you complete the rest of the setup, it comes together by itself with no issues from my side. What makes it nice is that we can actually start replacing on-site firewalls at this stage for the smaller clients because it does not matter if they go to a coffee shop or work from home; they are still secured by the same connection. The hops get shorter and you get better latency. We have done testing to see if it is better. One thing that we did notice with our proof of concept with our current client is that they have people connecting from the UK. When they used their previous VPN solution, uploading CAD drawings and other files to the server took a long time. They mentioned that it is much quicker on Cloudflare One's solution. I definitely believe that is part of the improved performance, and I am satisfied with that as well. What is nice about Cloudflare One is that it makes the setup easier and also easier to train technicians to maintain it. Compared to legacy systems, we do not need to get fancy firewalls in place that are costly. That is definitely also a cost-saver with Cloudflare One.
Robert Melendez - PeerSpot reviewer
Vice President Information Technology at Makeready
Enhances email security and has a very simple and easy-to-use UI
Spam protection is the most valuable feature. We have implemented the tool to enhance our email security. It helps prevent phishing attacks. The anomaly detection capabilities are baked into the security platform. The product integrates wonderfully with Microsoft 365. It's built right on a cloud platform and works almost natively. The solution has a very simple and easy-to-use UI. The tool appears extremely powerful and has a good solid feature set. It catches things that are bad for my environment. The user interface is good the way it is. If the solution continues down that path, I see no problems with the way it is going. It feels like a mature product.
Emeka Ndulu - PeerSpot reviewer
Cloud Solutions Architect at a tech services company with 201-500 employees
Improves threat visibility and response while reducing manual tasks and training users against phishing
I appreciate the attack simulation feature whereby I get to train users and educate them on how to identify phishing emails and spam emails, as well as the anti-spam protection. It gives me visibility into my threat environment and threat landscape to ensure that I am one step ahead of any likelihood of threats within my environment. I get to detect it and respond, so the threat intelligence is very effective. Microsoft security solutions save my time. It saves money because once I protect my environment, I don't lose money. It has decreased my detection time and my time to respond.

Quotes from Members

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

Pros

"It is a stable solution."
"The tool also offers good scalability, and the dashboard, along with real-time analytics, is very good."
"Cloudflare DDoS mitigates DDoS attacks."
"Cloudflare Zero Trust Platform removes the risk of exposing the applications to the public."
"Cloudflare is simple to use."
"It will take the blow rather than our applications should an attack occur."
"The capabilities of the software are strong enough for me to do what it's supposed to do. For me, we don't need to do a lot of configuration on our site. We just enable it and monitor it."
"Cloudflare is by far the most effective solution that I have come across."
"The most valuable feature of Avanan is its effectiveness. When scanning incoming emails for threats it can in an automated fashion, quarantine suspicious attachments."
"I like Avanan's SmartDLP module. It's seamless, and the administrative overhead is low. We aren't a very sophisticated operation. We just want to reduce our exposure, so we find ThreatCloud helpful. Avanan's acquisition by Check Point was beneficial for them."
"Easy to use for non-technical users."
"The program has reduced the dangers related to phishing, malware, ransomware, and other vulnerabilities."
"Email inspection has saved many employees from spam attacks and viruses from unauthorized sources."
"Spam protection is the most valuable feature."
"The threat detection tools enable us to ascertain malware and phishing messages across the email network infrastructure."
"It can retract unsafe emails and remove them from the entire communication channel."
"The most valuable feature of Microsoft Defender for Office 365 is its spam filter."
"I appreciate the attack simulation feature whereby I get to train users and educate them on how to identify phishing emails and spam emails, as well as the anti-spam protection."
"The benefit that stands out to me is the ability for multiple individuals to collaborate simultaneously within the same document. Additionally, there is the option to save the document directly in the integrated OneDrive or SharePoint."
"The feature of Microsoft Defender for Office 365 that I like the most is probably the email features specifically, because those are the ones that a typical end user will accidentally click on a link not knowing what it is, and it'll catch it, and then it'll feed it over to Defender and stop the attack from happening before it actually can."
"My experience deploying Microsoft Defender for Office 365 was seamless."
"The insights provided with Microsoft Defender for Office 365 are helpful because it comes with the E5 license, and by default, we can use a lot of capabilities."
"I would say that 90% of the spam and phishing attack emails get blocked right off the bat."
"One of the best features of the tool is its capability to aggregate insights from different workloads, basically from the Office 365 and endpoints part."
 

Cons

"The software has automated alerts, but the automated alerts are not available in the mobile app."
"For the topic of improvement, providing some training material is one of my suggestions."
"Lacks a VPN feature to provide a secure connection to the data center."
"Feedback could be enhanced. While I work efficiently with Clover as a partner in Mexico City, sometimes the information and requests are easier to manage with more concrete solutions."
"The initial onboarding was causing us some confusion."
"The tool should provide on-premise versions. Currently, all versions are cloud-based."
"Our customers no longer use Cloudflare because its service is subpar."
"Feedback could be enhanced."
"They should come up with a mobile application so that it can be more flexible."
"Avanan doesn't cover certain tool segments."
"The customer service team could come up with clear tutorials on how to use this platform to help new teams."
"Sometimes it seemed like the allow list wasn't working. I've created many allow list rules however, they still seem to be blocked; the same is true with the blocked list rules."
"The cost can be reviewed to enable SMEs to acquire it and enjoy great security features."
"Being cloud first and because we are in the movie business, we use a lot of Macintoshes. So, there is absolutely no reason for us to have Active Directory whatsoever. However, if you are using Office 365, you must have Active Directory in order to reset passwords. Even though we have a single sign-on provider, we must have Azure Active Directory for Office 365, which is really stupid. As a cloud application, you would think that I don't need Active Directory, which I don't need for anything else except Office 365. We have one server inside that space to help us manage Active Directory just for Office 365. This is a very sore point, but it is what it is."
"Integration with various SaaS offerings, who are leading in the SaaS market."
"When sending bulky emails, the system slows down and takes a long time before it responds effectively to our requests."
"Specifically, within Microsoft Defender for Office 365, I want it to improve the DLP capabilities."
"It is not up to the mark in comparison with Wiz or Palo Alto."
"Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS records like SPF, DKIM, and DMARC are not properly published."
"The certification training for Defender for 365 needs to be deeper and incorporate Sentinel. I took all the security courses except one, and Sentinel isn't included."
"Microsoft wants its well-paying customers to finish testing some of its half-baked products, find bugs, and report bugs back to Microsoft's team, which is a little frustrating for those who have to manage it and roll it up to thousands of people across the organization."
"Configuration at the mid-level could be improved for the support team."
"The phishing and spam filters could use some improvement."
"I think that Microsoft Defender for Office 365 could be improved if it could use VirusTotal to compare the programs or anything that I download."
 

Pricing and Cost Advice

"The pricing is somewhere in the middle. I would rate the pricing a seven out of ten."
"The solution is not that expensive."
"The solution's pricing lacks transparency."
"The prices are slightly expensive."
"Cloudflare Zero Trust Platform's pricing is good."
"The price tag is no longer $200,000, but rather $300,000 to $400,000. It's twice."
"The pricing of the solution is cheap. The licensing cost is also very low. I rate the cost and pricing a three out of ten."
"My company has to make yearly payments towards the licensing costs attached to the solution. There are no hidden charges apart from the licensing costs of the solution."
"Having the flexibility and modeling to do the pricing that best fits the needs of the organization is incredibly ideal. That is what Avanan does. They know exactly how many users are using it, etc. We can tune the invoicing associated with how we are using the product so we can charge it back to the shows appropriately."
"The pricing of Avanan is reasonable."
"The product is not the cheapest in the market."
"Avanan’s price is comparable to Barracuda."
"Good pricing arrangement as an SaaS offering."
"Microsoft Defender is expensive. I typically recommend it only if clients have the budget. Otherwise, I would suggest an alternative."
"It is much more expensive than using another solution because we have had to include some options and upgrade our license."
"While Microsoft Defender for Office 365 necessitates pricier E3 or E5 subscriptions, the extensive functionality offered by these licenses across various Microsoft products justifies the investment."
"The license is expensive because the cost is based on the number of users."
"The pricing has become expensive."
"For licensing, it's usually a yearly package for customers who are subscribed to Office 365, but they can also pay on a monthly basis."
"Microsoft Defender for Office 365 comes with Microsoft Windows. It is free with the operating system."
"Compared to other brands, Microsoft Defender for Office 365's pricing is competitive."
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Top Industries

By visitors reading reviews
Comms Service Provider
11%
Computer Software Company
10%
Financial Services Firm
8%
Manufacturing Company
8%
Computer Software Company
13%
Financial Services Firm
8%
Comms Service Provider
8%
Manufacturing Company
7%
Computer Software Company
13%
Financial Services Firm
8%
Manufacturing Company
8%
Comms Service Provider
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise2
Large Enterprise10
By reviewers
Company SizeCount
Small Business7
Midsize Enterprise8
Large Enterprise6
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise10
Large Enterprise31
 

Questions from the Community

What needs improvement with Cloudflare Access?
Cloudflare Access has strong integration with Microsoft, among other platforms. However, when it comes to Kaspersky, ...
What is your primary use case for Cloudflare Access?
Cloudflare Access provides secure access to internal applications for employees, external members of the organization...
What advice do you have for others considering Cloudflare Access?
Cloudflare Access is one of the best integrations available. While about two hundred vendors offer similar services, ...
What do you like most about Avanan?
Spam protection is the most valuable feature.
What needs improvement with Avanan?
Avanan doesn't cover certain tool segments. Barracuda provides backup and retention of emails and Microsoft 365’s bac...
What needs improvement with Microsoft Defender for Office 365?
The inbuilt analysis of false positives can be faster. It's not slow, but it can be faster.
What is your primary use case for Microsoft Defender for Office 365?
My use case for Microsoft Defender for Office 365 is for email protection, safe links, protection of links, documents...
 

Also Known As

Cloudflare Area 1 Email Security, Cloudflare Bot Management, Cloudflare Gateway, Cloudflare Zero Trust Platform, Cloudflare DDoS, Cloudflare SASE & SSE Platform
No data available
MS Defender for Office 365
 

Overview

 

Sample Customers

23andMe
Bethel School District, ServiceSource, Capital Caring
Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Find out what your peers are saying about Avanan vs. Microsoft Defender for Office 365 and other solutions. Updated: March 2026.
884,732 professionals have used our research since 2012.