Kiteworks vs Microsoft Exchange Online Protection (EOP) comparison

Kiteworks and Microsoft are both solutions in the Email Security category. Kiteworks is ranked #32 with an average rating of 8.0, while Microsoft is ranked #6 with an average rating of 8.3. Kiteworks holds a 0.3% mindshare in Email Security, compared to Microsoft’s 6.6% mindshare. Additionally, 100% of Kiteworks users are willing to recommend the solution, compared to 90% of Microsoft users who would recommend it.

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Executive SummaryUpdated on Dec 3, 2024

Kiteworks and Microsoft Exchange Online Protection (EOP) are competing in secure communications and email security. Kiteworks has the upper hand in data protection and secure file sharing, while EOP is preferred for email security due to its comprehensive threat protection.

Features: Kiteworks offers secure file sharing, privacy compliance, and robust data protection, making it suitable for enterprises focused on data security. Key features include the ability to send large files, a private content network, and centralized management of information exchanges. EOP provides advanced threat protection with anti-phishing, anti-malware, and spam filtering capabilities, integrated with Microsoft 365, making it an excellent choice for businesses focused on email security.

Room for Improvement: Kiteworks could enhance its user interface to make navigation more intuitive and improve integration with other enterprise applications for greater ecosystem compatibility. Additional reporting capabilities would be beneficial. EOP could improve its complexity in threat management interface, as some users may find configuration challenging, enhance its handling of false positives in spam filtering, and further streamline integration with non-Microsoft systems.

Ease of Deployment and Customer Service: Kiteworks offers customizable deployment options, including cloud and on-premises, backed by direct, personalized support for a smooth setup. EOP integrates seamlessly with Microsoft 365, utilizing a cloud-based model with extensive support from Microsoft's ecosystem, though some users may find the support less personalized.

Pricing and ROI: Kiteworks utilizes a custom pricing model which might require a significant initial investment but offers substantial ROI through its enhanced data security. EOP, often bundled with Microsoft 365, provides a competitive cost structure, delivering ROI through its strong email protection features, with cost efficiency being a major attractive point.

To learn more, read our detailed Kiteworks vs. Microsoft Exchange Online Protection (EOP) Report (Updated: June 2025).

Buyer's Guide

Kiteworks vs. Microsoft Exchange Online Protection (EOP)

June 2025

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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

Microsoft Defender for Offi...

Mindshare comparison

As of June 2025, in the Email Security category, the mindshare of Microsoft Defender for Office 365 is 12.6%, down from 17.6% compared to the previous year. The mindshare of Kiteworks is 0.3%, up from 0.2% compared to the previous year. The mindshare of Microsoft Exchange Online Protection (EOP) is 6.6%, down from 9.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Email Security

Featured Reviews

Tolu Omolaja

Head of Department of Network Communications at Eko electricity

Great URL scanning and attachment scanning, but I would like more proactive threat analysis

The two main features that prove most beneficial for us are URL scanning and attachment scanning. URL scanning involves an automatic scan of links and emails. When a user clicks on a link within an email, the system promptly checks the link's safety. If the link is deemed safe, access is granted automatically. However, if it is flagged as unsafe, we receive feedback and notification to caution us about the potentially harmful link. At this point, we are presented with the option to proceed or return. I have personally witnessed the system identify a few unsafe links, making this the primary advantage of using the solution. The second crucial aspect is the scanning of attachments. When an email containing an attachment arrives, we receive a notification of the new email, along with information that the attachment is being scanned for threats. This additional layer of security provides peace of mind for our organization. While Microsoft Defender for Office 365 offers numerous features, these two stand out as particularly impressive and valuable to us.

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Sukkanta Banerjee

Senior Software Engineer at Wipro Limited

Two-factor authentication and .ZIP format make large file transfers very secure

The most valuable feature is the ability to send a large file of 30 GB in size and more. In Outlook and other email applications, you cannot send files that are larger than 20 MB. But with Kiteworks, 30 GB is transferable by default and, with the proper approval, a file of up to 100 GB can be sent. It makes file transfer very easy and smooth. Also, only the .ZIP format is supported because it is a very secure mode of file transfer, and that is why it is recommended. It also has built-in antivirus, so if it detects any malware it will quarantine the file and it won't be delivered. This is really important to keep the service up and running in a proper and secure manner. With people working from home, the data needs to be checked to see what kind of data is being sent. It has a two-factor authentication mechanism. For example, if a person with a particular domain is using Kiteworks and sends a file to a party outside of his domain, that external party has to go through two-factor authentication. The receiver gets a link that takes them to the setup of a temporary account, which will be valid for three days. The recipient will also receive a customized password separately. Only after all these steps will they be able to access the file. That access is only available to a person with the mail ID to which the file was sent. In addition, admins can see who is sending sensitive content, what that content is, and to whom it is being sent, and can track emails. One week of good training will give a user complete knowledge for using the solution. The system is very easy to use. You just click on "Compose," attach a file, and send it. It's very easy compared to Outlook or Teams. It's quite simple, even for someone logging in for the first time. It is very smooth and easy to send files.

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Amber Worth

General Manager at Ambient iT

Retrieves data from quarantines and easy to read logs with robust security features

Some of the searchability when looking for specifics in Exchange logs is tedious. Although eventually the information is located, it can be difficult if detailed information is lacking. Improving the search process by allowing searches with different types of parameters and facilitating searches within emails would be advantageous. Simplifying interfaces would also be appreciated.

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Quotes from Members

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

Pros

"It gives us visibility into threats and, for endpoints, it helps us to prioritize threats. We used to have a lack of visibility, but now our time to detect and respond has decreased."

"The most valuable feature of Microsoft Defender for Office 365 is the ease of use."

"Overall, I would rate Microsoft Defender for Office 365 at a ten."

"I would say that 90% of the spam and phishing attack emails get blocked right off the bat."

"It also gives me good visibility because, with Defender, I'm using a Microsoft product to defend Microsoft products. The integration was really seamless and I have wide visibility because it picks up almost everything. Literally, I can see almost every activity that happens, from the e-mail to the workstation itself."

"The initial setup is straightforward. You just add the license, click it, and then you can set up the rules. It is quite simple."

"Threat Explorer is an invaluable tool for me, and it plays a crucial role in helping me discern the origins of various email campaigns, pinpointing where they emanate from, and identifying the individuals within our organization who are affected."

"Microsoft Defender for Office 365 helps people to work remotely. It is a secure solution. We don't need to use our company's computers or get VPN connections to the networks. I can control how they share screens and what they send to the devices. It keeps our organizations confidential and sensitive information safe."

More Microsoft Defender for Office 365 pros

"The most valuable aspect of Kiteworks is undoubtedly the private content network. This feature is particularly beneficial for us. Furthermore, it serves as a centralized platform that enables us to track and manage our information exchange."

"We can see when people are sending things. We can definitely see who is sending to whom. From the administrative logs, we can see who is sending to an outside entity, and those logs are retained for quite a while."

"I can identify from which region our users are uploading or downloading files."

"We could see whether the customer with whom we shared a file had downloaded it, which was not available with GitHub."

"The most valuable feature is the ability to allow end-users to manage their own information and data with minimal administration. That's the best feature from my perspective."

"The benefits that Kiteworks has provided to its customers in terms of data sovereignty."

"The most valuable feature is the ability to send a large file of 30 GB in size and more. In Outlook and other email applications, you cannot send files that are larger than 20 MB. But with Kiteworks, 30 GB is transferable by default and, with the proper approval, a file of up to 100 GB can be sent. It makes file transfer very easy and smooth."

"I like Kiteworks or Accellion because it's continuously upgraded. I also know that it probably works with a lot of clients."

More Kiteworks pros

"Microsoft Exchange Online Protection has features like DLP (data loss protection), Safe Attachment, and Safe Links."

"It is an easy solution."

"We use the solution in all our environments. We use it for remedy tickets and give them updates. It was our main communication point."

"The solution's stability is very, very good. I didn't face any problems in the last year."

"It provides security to both on-premises and Azure infrastructures."

"The product protects against malware."

"You can use the product to create special accounts."

"It offers great security against malware and other threats."

More Microsoft Exchange Online Protection (EOP) pros

Cons

"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."

"They can improve their security in a way where a customer can know if all their attachments are safe or not to open through a report. The solution does its job perfectly, but it never reports to the customer whether those attachments have been stopped before or not."

"We noticed that from time to time, Microsoft's stability does have problems. Sometimes the service goes up and down. Sometimes they change without prior notice."

"Microsoft needs to broaden its global support presence by establishing teams of subject-matter experts in all regions."

"Microsoft Defender for Office 365 must improve the overall management style, including the GUI. It also needs to change the filters so that it is easy to whitelist and blacklist data."

"The product must provide better malware detection."

"I'd like some additional features any product can give me to protect our environment in a better way."

"The pre-sales cost calculations could be more transparent."

More Microsoft Defender for Office 365 cons

"The one feature, which I have also requested directly to Kiteworks, is to have a scheduled upgrade function. Currently, one of my engineers logs in after hours for the upgrade. We're a hospital, and we're 24/7, but the primary users are seven to five. So, we log in the early evening just to push a button to tell it to do the update. It would be nice if that could be very easily scheduled."

"I would like to see immediate releases of fixes because now it takes at least a week. If that time span can be reduced to one day or two days, that would be very helpful for users so that things are sorted and transactions work smoothly."

"In my experience, their technical support can be a little slow."

"File location could be improved."

"Perhaps there could be a notification to users about their bandwidth or network packet loss."

"I noticed the Kiteworks login UI is very basic, lacking customization. Allowing more HTML tags to add hyperlinks or user-friendly information on the home page would be very useful."

"We have experienced a few hiccups and bugs when using the admin console and from a user perspective."

"It could be more stable. In the next release, it would be better if it was more stable with improved performance."

More Kiteworks cons

"The tool's classification for bulk email is cumbersome."

"When the product is being updated, it changes some of the setups. The support team is also not good."

"Not all settings can be configured automatically and most still require manual configuration. However, there is an automation tool available that can be used to input all the configurations either as a script or a tool it would be helpful."

"When you're using a Microsoft product solution, you can scale it, but if you're not, there are limitations."

"Performance and speed should continue to be improved."

"The product's end-of-life cycle could be extended."

"The price of Microsoft Exchange Online Protection could be reduced to make it more competitive."

"The reporting needs a little bit of improvement."

More Microsoft Exchange Online Protection (EOP) cons

Pricing and Cost Advice

"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."

"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 solution could be better by simplifying the business model of their licensing. It was hard to figure out how to get the licensing done for the environment, initially."

"The license is expensive because the cost is based on the number of users."

"From the pricing point of view, like any other product in the market, there is scope for negotiation."

"Microsoft Defender is expensive. I typically recommend it only if clients have the budget. Otherwise, I would suggest an alternative."

"The product is expensive."

"Microsoft Defender for Office 365 is an add-on to the Office license. Many customers are purchasing this solution."

More Microsoft Defender for Office 365 pricing and cost advice

"The license management is changing and confusing. If I could make one change to it, it would be better license management through the API."

"They changed it midstream. We were being charged a certain flat rate for SFTP traffic. For whatever reason, at the beginning of the year, our pricing changed, and we are now being charged more for using a feature of the product than we were when we first bought it. That has been our experience with billing. It turned out to be more expensive than when we started with it."

"It is not really expensive. I mean, to me it's obviously expensive, but it's worth it."

"I believe it's a little costly, but given the faith that we put into it from a security perspective to maintain the integrity of our patient information that is being transferred through this system, that's a small price to pay. So, on the surface, it might look like a lot of money, but depending on the need for security, which is where we feel it shines, it's okay price-wise."

"The price of Kiteworks is reasonable."

"The solution is very expensive because we are buying with Malaysian Ringgit and it's sold in US dollars."

"Online Protection is fairly expensive."

"On a scale of one to ten, where one is cheap, and ten is very expensive, I rate the pricing a six. For licensing, we can make monthly or yearly payments. Right now, we pay 5 USD per month to secure a person's license."

"It is a low-price solution."

"The product's pricing is competitive for the US market."

"The product is bundled with Microsoft 365."

"The solution falls on the higher or more expensive side of the spectrum."

"The pricing of the solution is reasonable."

"The price of Microsoft Exchange Online Protection is reasonable."

More Microsoft Exchange Online Protection (EOP) pricing and cost advice

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Top Industries

By visitors reading reviews

Computer Software Company

16%

Financial Services Firm

Manufacturing Company

Government

15%

Financial Services Firm

13%

Manufacturing Company

Computer Software Company

15%

Financial Services Firm

Government

Manufacturing Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

Questions from the Community

What do you like most about Microsoft Defender for Office 365?

Threat Explorer is an invaluable tool for me, and it plays a crucial role in helping me discern the origins of variou...

See all answers

What is your experience regarding pricing and costs for Microsoft Defender for Office 365?

Microsoft is quite affordable with a lot of features available for any size organization.

See all answers

What needs improvement with Microsoft Defender for Office 365?

Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS recor...

See all answers

What is Kiteworks?

Kiteworks is a secured file sharing platform that enables users to collaborate with different parties across a robust...

See all answers

What do you like most about Kiteworks?

The benefits that Kiteworks has provided to its customers in terms of data sovereignty.

See all answers

What needs improvement with Kiteworks?

I'm not a network expert, however, there must be some room for improvement. Perhaps there could be a notification to ...

See all answers

What do you like most about Microsoft Exchange Online Protection?

The initial setup was easy. The configuration process is very straightforward.

See all answers

What needs improvement with Microsoft Exchange Online Protection?

I would like to improve the setting of rules in Microsoft Exchange Online Protection (EOP) as it is currently working...

See all answers

What is your primary use case for Microsoft Exchange Online Protection?

I am using Microsoft Exchange Online Protection (EOP) ( /products/microsoft-exchange-online-protection-eop-reviews ) ...

See all answers

Comparisons

Proofpoint Email Protection vs Microsoft Defender for Office 365

Compared 13% of the time

Check Point Harmony Email & Collaboration vs Microsoft Defender for Office 365

Compared 7% of the time

Barracuda Email Protection vs Microsoft Defender for Office 365

Compared 5% of the time

Mimecast Email Security vs Microsoft Defender for Office 365

Compared 5% of the time

Trend Micro Email Security vs Microsoft Defender for Office 365

Compared 4% of the time

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Sterling Commerce Connect:Direct vs Kiteworks

Compared 40% of the time

SharePoint vs Kiteworks

Compared 9% of the time

MOVEit vs Kiteworks

Compared 8% of the time

FileCloud vs Kiteworks

Compared 8% of the time

GoAnywhere MFT vs Kiteworks

Compared 7% of the time

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Proofpoint Email Protection vs Microsoft Exchange Online Protection (EOP)

Compared 11% of the time

Cisco Secure Email vs Microsoft Exchange Online Protection (EOP)

Compared 10% of the time

Fortinet FortiMail vs Microsoft Exchange Online Protection (EOP)

Compared 10% of the time

Mimecast Email Security vs Microsoft Exchange Online Protection (EOP)

Compared 7% of the time

Barracuda Email Security Gateway vs Microsoft Exchange Online Protection (EOP)

Compared 4% of the time

More Microsoft Exchange Online Protection (EOP) Competitors

Product Reports

Buyer's Guide

Microsoft Defender for Office 365

May 2025

Microsoft Defender for Office 365 report

Download Microsoft Defender for Office 365 product report

Buyer's Guide

Kiteworks

June 2025

Download Kiteworks product report

Buyer's Guide

Microsoft Exchange Online Protection (EOP)

May 2025

Microsoft Exchange Online Protection (EOP) report

Download Microsoft Exchange Online Protection (EOP) product report

Also Known As

MS Defender for Office 365

Accellion

Microsoft EOP, MS Exchange Online Protection

Overview

Microsoft Defender for Office 365 is a comprehensive security solution designed to protect organizations against advanced threats in their email, collaboration, and productivity environments. It combines the power of Microsoft's threat intelligence, machine learning, and behavioral analytics to provide real-time protection against phishing, malware, ransomware, and other malicious attacks.

With Microsoft Defender for Office 365, organizations can safeguard their email communication by detecting and blocking malicious links, attachments, and unsafe email content. It employs advanced anti-phishing capabilities to identify and prevent sophisticated phishing attacks that attempt to steal sensitive information or compromise user credentials.

This solution also offers robust protection against malware and ransomware. It leverages machine learning algorithms to analyze email attachments and URLs in real-time, identifying and blocking malicious content before it reaches users' inboxes. Additionally, it provides advanced threat-hunting capabilities, allowing security teams to proactively investigate and respond to potential threats.

Microsoft Defender for Office 365 goes beyond email protection and extends its security features to other collaboration tools like SharePoint, OneDrive, and Teams. It scans files and documents stored in these platforms, ensuring that they are free from malware and other malicious content. It also provides visibility into user activities, helping organizations detect and mitigate insider threats.

Furthermore, this solution offers rich reporting and analytics capabilities, providing organizations with insights into their security posture and threat landscape. It enables security administrators to monitor and manage security incidents, track trends, and take proactive measures to enhance their overall security posture.

Microsoft

Kiteworks empowers organizations to effectively manage risk in every send, share, receive, and save of sensitive content over numerous communications channels: email, file sharing, managed file transfer, APIs, and web forms. The Kiteworks platform unifies, tracks, controls, and secures sensitive content moving within, into, and out of an organization, significantly improving risk management and ensuring regulatory compliance.

Kiteworks

Microsoft Exchange Online Protection (EOP) is a comprehensive email filtering and security service designed to protect organizations from spam, malware, and other email-based threats. It provides advanced threat protection, anti-malware and anti-spam filtering, and data loss prevention capabilities.

With EOP, organizations can ensure the security and integrity of their email communications. It uses multiple layers of filtering and scanning to detect and block malicious content, including phishing attempts, viruses, and ransomware. EOP also leverages machine learning and artificial intelligence to continuously improve its threat detection capabilities.

In addition to its robust security features, EOP offers advanced anti-spam filtering to reduce unwanted and unsolicited emails. It uses a combination of reputation-based filtering, content filtering, and sender authentication techniques to identify and block spam messages.

EOP also includes data loss prevention (DLP) capabilities to prevent sensitive information from being leaked or shared inappropriately. It allows organizations to define policies to detect and prevent the transmission of sensitive data, such as credit card numbers or social security numbers, via email.

Furthermore, EOP integrates seamlessly with Microsoft Exchange Online and other Office 365 services, providing a unified and integrated email security solution. It can be easily managed through the Exchange admin center, allowing administrators to configure and monitor security settings, review reports, and manage quarantined emails.

Microsoft

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.

United States Securities and Exchange Commission, National Health Service, Husch Blackwell LLP, NYC Health + Hospitals, Viatris, MITRE Corporation, Chubb, Kraft Heinz, KPMG, Kohler, National Institute of Standards and Technology, Purdue Pharma, AVL

Information Not Available

Buyer's Guide

Kiteworks vs. Microsoft Exchange Online Protection (EOP)

June 2025

Free Report: Kiteworks vs. Microsoft Exchange Online Protection (EOP)

Find out what your peers are saying about Kiteworks vs. Microsoft Exchange Online Protection (EOP) and other solutions. Updated: June 2025.

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