Kiteworks vs Mimecast Email and Collaboration Threat Protection comparison

Kiteworks and Mimecast are both solutions in the Secure Email Gateway (SEG) category. Kiteworks is ranked #9 with an average rating of 8.0, while Mimecast is ranked #3 with an average rating of 8.3. Kiteworks holds a 1.4% mindshare in SEG, compared to Mimecast’s 15.9% mindshare. Additionally, 100% of Kiteworks users are willing to recommend the solution, compared to 92% of Mimecast users who would recommend it.

Kiteworks

Read 13 Kiteworks reviews

4,333 Views
217 Comparison Views

100% willing to recommend

Mimecast Email and Collabor...

Read 39 Mimecast Email and Collaboration Threat Protection reviews

8,336 Views
2,668 Comparison Views

92% willing to recommend

Kiteworks

Mimecast Email and Collabor...

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Executive SummaryUpdated on Feb 11, 2026

Kiteworks and Mimecast Advanced Email Security are both competitive solutions in the secure communication space. Kiteworks holds the upper hand in user-friendly collaboration and data protection, while Mimecast is preferred for its comprehensive threat prevention features.

Features: Kiteworks stands out for secure file sharing, regulatory compliance, and seamless collaboration tools. Mimecast is recognized for its email security through robust threat intelligence, ransomware protection, and advanced email threat mitigation capabilities.

Room for Improvement: Kiteworks could enhance its mobile access, provide better insights into external sharing, and improve its administrative controls. Mimecast could focus on making its setup process more user-friendly, integrate more seamlessly with third-party platforms, and expand its reporting capabilities to offer deeper insights.

Ease of Deployment and Customer Service: Kiteworks offers a straightforward deployment focused on seamless integration and reliable support. Mimecast provides a straightforward cloud-based deployment with commendable scalability and well-structured training resources.

Pricing and ROI: Kiteworks offers cost-effective solutions with promising ROI due to its pricing model. Mimecast, while higher in cost, offers substantial ROI through its extensive threat prevention capabilities, justifying the investment in enhanced security.

To learn more, read our detailed Kiteworks vs. Mimecast Email and Collaboration Threat Protection Report (Updated: April 2026).

Buyer's Guide

Kiteworks vs. Mimecast Email and Collaboration Threat Protection

April 2026

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Helped 893,915 peers since 2012

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

Kiteworks

Ranking in Secure Email Gateway (SEG)

9th

Average Rating

8.6

Reviews Sentiment

6.9

Number of Reviews

Ranking in other categories

Enterprise Content Management (16th), Email Security (26th), Managed File Transfer (MFT) (7th), Content Collaboration Platforms (14th)

Mimecast Email and Collabor...

Ranking in Secure Email Gateway (SEG)

3rd

Average Rating

8.0

Reviews Sentiment

5.9

Number of Reviews

Ranking in other categories

Email Archiving (2nd), Secure Web Gateways (SWG) (15th), Office 365 Protection (2nd)

Mindshare comparison

As of May 2026, in the Secure Email Gateway (SEG) category, the mindshare of Kiteworks is 1.4%, up from 0.5% compared to the previous year. The mindshare of Mimecast Email and Collaboration Threat Protection is 15.9%, up from 11.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Secure Email Gateway (SEG) Mindshare Distribution
Product	Mindshare (%)
Mimecast Email and Collaboration Threat Protection	15.9%
Kiteworks	1.4%
Other	82.7%

Secure Email Gateway (SEG)

Featured Reviews

KishoreT-Review

Associate Consultant at a tech consulting company with 10,001+ employees

Streamlined global file sharing with user-friendly interface and self-service capabilities

I'm not a network expert, however, there must be some room for improvement. Perhaps there could be a notification to users about their bandwidth or network packet loss. If users receive such notifications, they can understand any disruptions are due to issues with their network or bandwidth rather than the site or Kiteworks. Additionally, I work from offshore India, and I told my client manager to communicate with the Kiteworks forum salesman regarding one feature. 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.

Read full review

Test Logix

Email Security Engineer at Logic Infosecurity

Experience high detection and user-friendly policies with reliable email security implementation

The system is not user-friendly because you have to create policies that are mapped in a dictionary. As an IT engineer, I understand how it works, but explaining it to another IT person can be difficult. Having more user-friendly dashboards would improve the work experience. In Mimecast Email Security, checking policies in the dictionary or gateway is very complicated, and not everyone understands this process. If you examine the Check Point portal, it's user-friendly with easily accessible tabs that anyone can explore. With Mimecast Email Security, making changes might impact existing mailboxes. The portal is complicated compared to Check Point's user-friendly interface.

Read full review

Quotes from Members

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

Pros

"The solution can be used remotely; it's easy to upload and share files."

"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."

"Scalability is impressive."

"The best part of this solution is that we can generate multiple reports about how the data is transferred and about user information or IP."

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

"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."

"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 most useful feature of this solution is to share files with external parties and we can use this functionality to share files internally too."

More Kiteworks pros

"The solution offers good technical support."

"The solution is stable and reliable. There are no bugs or glitches, and it doesn't crash or freeze."

"Its administration console is very easy to use. The administration console is absolutely important because you interact with the platform through it."

"Mimecast certainly helped my customers reduce phishing emails."

"Email security is the most valuable feature of the solution."

"Mimecast has been in the market for a long time; it's a good tool if you want to simplify your operations and a good tool for removing on-prem appliances that otherwise you would need to do with the protection that Mimecast provides."

"The Large File Send feature comes in handy when you have to send fairly large attachments."

"We like the content filtering and secure messaging features."

More Mimecast Email and Collaboration Threat Protection pros

Cons

"File location could be improved."

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

"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."

"There is one particular thing that is a nuisance."

"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."

"It would be nice if Kiteworks could provide a free version of the platform so that it could be used for a certain number of file transfers. We could be charged a fee if we exceeded the number of allotted file transfers."

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

More Kiteworks cons

"Technical support has been slower than it was in the past, likely due to the pandemic."

"I'd like to have better support from the product in the future."

"The solution is complex and not easy to use."

"The detection rates are an area for improvement."

"The price of the solution is expensive. It can improve by reducing the price."

"From an administrative point of view, Mimecast is a little bit cumbersome and difficult. It's not something that the end-user can easily find navigate themselves."

"While it's quick and easy, the initial setup could be more user-friendly."

"Their support should be improved. They are notorious for sending you to knowledge-based articles rather than actually talking to you about the problem you're reporting."

More Mimecast Email and Collaboration Threat Protection cons

Pricing and Cost Advice

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

"The price of Kiteworks is reasonable."

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

"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."

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

"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."

"On a scale of one to ten, where one is cheap, and ten is expensive, I rate the pricing a ten."

"The product price is moderate. I rate the pricing a five out of ten."

"The licensing costs are per-user for the product that you get with them."

"It is a bit expensive."

"For what it is, the product is overpriced."

"The price of Mimecast Mailbox Continuity is expensive."

"It's an expensive solution."

"The customers can select the license packages as per their requirements."

More Mimecast Email and Collaboration Threat Protection pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

13%

Government

11%

Comms Service Provider

10%

Manufacturing Company

Computer Software Company

11%

Financial Services Firm

Comms Service Provider

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	3
Large Enterprise	11

By reviewers
Company Size	Count
Small Business	19
Midsize Enterprise	11
Large Enterprise	13

Questions from the Community

What is Kiteworks?

Kiteworks is a secured file sharing platform that enables users to collaborate with different parties across a robust offering of secured protected channels. Users have the option of virtual privat...

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What needs improvement with Kiteworks?

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What advice do you have for others considering Kiteworks?

Scalability is impressive. It can be highly available, resilient, and scalable infrastructure. I can confidently give it a nine. It suits any level of organization, whether a small setup with two a...

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What is your experience regarding pricing and costs for Mimecast Email Security with Targeted Threat Protection?

Do you know anything about the pricing and cost of the Mimecast Email Security?

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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...

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What is your primary use case for Mimecast Email Security with Targeted Threat Protection?

I have been working with Mimecast Email Security.

See all answers

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Compared 10% of the time

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Product Reports

Buyer's Guide

Kiteworks

May 2026

Download Kiteworks product report

Buyer's Guide

Mimecast Email and Collaboration Threat Protection

April 2026

Mimecast Email and Collaboration Threat Protection report

Download Mimecast Email and Collaboration Threat Protection product report

Also Known As

Accellion

Mimecast Email Security with Targeted Threat Protection, Mimecast Web Security, Mimecast Mailbox Continuity, Mimecast Advanced Email Security

Overview

Kiteworks provides secure enterprise file sharing with mobile access and collaboration tools, supporting up to 100 GB transfers. It ensures data safety with encryption and offers a smooth interface for independent data management.

Kiteworks is tailored for effective large-scale data transfers using SFTP, email, and web. It supports two-factor authentication, antivirus scanning, and seamless integration with SSO to minimize administrative tasks. Users benefit from a centralized platform that offers visibility and control over data exchanges, receiving activity notifications and managing encryption keys independently. Despite its strengths, technical support and interface stability need improvement, along with the introduction of automated LDAP syncing and expanded knowledge resources.

What features make Kiteworks stand out?

Mobile Access: Facilitates secure data handling on-the-go.
Enterprise File Sharing: Enables large file transfers with up to 100 GB limit.
Collaboration Tools: Streamlines team efforts and file sharing.
Enhanced Security: Includes two-factor authentication and antivirus scanning.
SSO Integration: Reduces administrative tasks for efficient user management.

What ROI benefits should users seek in reviews?

Data Security: High level of encryption ensures sensitive data protection.
Efficient Management: Independent data handling and activity alerts improve workflow.
Administrative Ease: SSO and centralized logs simplify oversight and reduce complexity.

Organizations in sectors like healthcare and finance utilize Kiteworks to securely share and transfer sensitive data, from medical records to credit card information, ensuring compliance and data integrity. Industries benefit from its automated data transfer and secure communication capabilities, critical for operations ranging from air quality monitoring to banking transactions.

Kiteworks

Mimecast Advanced Email Security offers advanced features like sandboxing, email archiving, and phishing protection. It's known for integration with Microsoft 365 and user-friendly admin management, making it a robust choice for secure communications.

Focused on safeguarding emails, Mimecast Advanced Email Security integrates seamlessly with Microsoft 365, providing features such as sandboxing, spam filtering, and email archiving. It delivers comprehensive protection against phishing, identity threats, and impersonation attempts. Administrators benefit from the ability to monitor external communications and customize configurations, enhancing email security. Users appreciate the intuitive admin console and responsive support team. Although it faces challenges in threat detection rates and administration complexity, its capabilities in email monitoring, spam filtering, and URL inspection remain valued by enterprises seeking reliable email security that supports compliance needs.

What key features should users explore?

Sandboxing: Analyzes attachments in a secure environment to detect threats.
Email Archiving: Provides secure long-term storage of emails for compliance.
Spam Filtering: Prevents unsolicited emails from clogging the inbox.
URL Inspection: Checks links in emails for malicious content.
Phishing Protection: Guards against deceptive tactics to protect sensitive data.

What benefits can impact ROI?

Regulatory Compliance: Facilitates adherence to standards such as HIPAA.
Integration: Enhances existing systems with seamless Microsoft 365 integration.
Support: Offers a responsive support team to resolve issues promptly.
Email Security: Improves threat prevention with effective spam and phishing protections.

Mimecast Advanced Email Security is implemented across industries to protect against email threats like phishing, spam, and malicious attachments. It serves as both a gateway and an archiving tool, supporting compliance in healthcare and finance by offering features like URL protection and data loss prevention. Enterprises leverage its capabilities to secure inbound and outbound communications effectively.

Mimecast

Sample Customers

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

Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group

Buyer's Guide

Kiteworks vs. Mimecast Email and Collaboration Threat Protection

April 2026

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Find out what your peers are saying about Kiteworks vs. Mimecast Email and Collaboration Threat Protection and other solutions. Updated: April 2026.

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