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Kiteworks vs Mimecast Email Security comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Nov 5, 2024

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)
12th
Average Rating
8.6
Reviews Sentiment
6.9
Number of Reviews
13
Ranking in other categories
Enterprise Content Management (15th), Email Security (33rd), Managed File Transfer (MFT) (6th), Content Collaboration Platforms (14th)
Mimecast Email Security
Ranking in Secure Email Gateway (SEG)
4th
Average Rating
8.0
Reviews Sentiment
6.2
Number of Reviews
31
Ranking in other categories
Office 365 Protection (3rd)
 

Mindshare comparison

As of August 2025, in the Secure Email Gateway (SEG) category, the mindshare of Kiteworks is 0.8%, up from 0.1% compared to the previous year. The mindshare of Mimecast Email Security is 12.4%, down from 15.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG)
 

Featured Reviews

Sukkanta Banerjee - PeerSpot reviewer
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.
ShaheenKapery - PeerSpot reviewer
Provides valuable security features and has a straightforward setup process
The initial setup process is straightforward and takes a weekend at most. A .com domain can take up to forty-eight hours, while a local domain takes about four to eight hours because it has to propagate through the international DNS records. It is a cloud-only solution. If you're managing email security on-premises, you use your bandwidth to download emails, including spam, and then use your servers to clean it up. For example, say a third of your email is spam; this consumes significant bandwidth and resources. However, if you use Mimecast, they filter the emails on their servers before delivering them to you. It can be a major selling point in regions with expensive bandwidth, such as Africa. You can save bandwidth and improve overall efficiency by offloading the spam filtering to Mimecast.

Quotes from Members

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

Pros

"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."
"The solution removes the limitations with file attachment size that is found with regular email."
"I like Kiteworks or Accellion because it's continuously upgraded. I also know that it probably works with a lot of clients."
"The solution can be used remotely; it's easy to upload and share 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 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."
"I can identify from which region our users are uploading or downloading files."
"The benefits that Kiteworks has provided to its customers in terms of data sovereignty."
"The interface of this solution is very easy to navigate and user-friendly. There is no delivery in email and other communications, making it reliable. The configuration is relatively easy."
"The solution offers good technical support."
"The product is good. To date, we have not faced any challenges."
"Email security is the most valuable feature of the solution."
"It's really quite user-friendly. In terms of technical superiority and the product itself, there are no complaints. It is really cutting edge."
"Due to our specialized use case, that HIPAA dictionary really comes in handy."
"In terms of efficacy, Proofpoint is better than Mimecast, though it's a little difficult to manage."
"I would rate Mimecast Email Security a nine out of ten."
 

Cons

"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."
"File location could be improved."
"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."
"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."
"Kiteworks could benefit from enhancing the proposal knowledge base section, specifically regarding the type of work involved. Currently, the knowledge base seems insufficiently dedicated to this topic, making it challenging for new users to access the relevant administrative law. Improving the visual aids and providing clearer explanations could alleviate this issue."
"There is no offboarding process for end-users in Kiteworks. It's a manual process. There is no automated syncing with LDAP and checking to see if the account is still active. It's a manual process to get people out of here, which isn't the best way."
"Its pricing can be improved. It is a bit expensive."
"The platform's cost-effectiveness could be improved."
"The detection rates are an area for improvement."
"While it's quick and easy, the initial setup could be more user-friendly."
"The solution should include more AI features instead of Mimecast's more general static configuration tooling."
"We discussed the phishing aspect, the DNS system, and the key rotation."
"The reaction time between a new threat being identified and Mimecast picking it up needs to be narrowed a bit."
"The product's interface could be improved to be more user-friendly."
 

Pricing and Cost Advice

"The price of Kiteworks is reasonable."
"The license management is changing and confusing. If I could make one change to it, it would be better license management through the API."
"The solution is very expensive because we are buying with Malaysian Ringgit and it's sold in US dollars."
"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."
"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."
"Compared to the other products in the market, it is neither cheap but nor very expensive. I would rate it somewhere in the middle, 5 out of 10."
"On a scale of one to ten, where one is cheap, and ten is expensive, I rate the pricing a ten."
"It's an expensive solution."
"There are additional costs beyond the standard licensing fee."
"For what it is, the product is overpriced."
"We pay monthly fees to our provider."
"The solution is expensive."
"The licensing costs are per-user for the product that you get with them."
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Top Industries

By visitors reading reviews
Government
16%
Financial Services Firm
12%
Manufacturing Company
7%
Retailer
7%
Computer Software Company
14%
Financial Services Firm
7%
Manufacturing Company
6%
Comms Service Provider
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

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...
What do you like most about Kiteworks?
The benefits that Kiteworks has provided to its customers in terms of data sovereignty.
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 users about their bandwidth or network packet loss. If users receive such notifi...
What do you like most about Mimecast Email Security with Targeted Threat Protection?
The interface of this solution is very easy to navigate and user-friendly. There is no delivery in email and other communications, making it reliable. The configuration is relatively easy.
What needs improvement with Mimecast Email Security with Targeted Threat Protection?
If I ask you about the room for improvement, we discussed the phishing aspect, the DNS system, and the key rotation. Apart from that, are there any other areas that you would like to see improved o...
 

Also Known As

Accellion
Mimecast Email Security with Targeted Threat Protection
 

Overview

 

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
Find out what your peers are saying about Kiteworks vs. Mimecast Email Security and other solutions. Updated: July 2025.
865,295 professionals have used our research since 2012.