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KerioConnect vs Microsoft Exchange comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on May 21, 2025

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

KerioConnect
Ranking in Email Applications
9th
Average Rating
7.2
Reviews Sentiment
7.3
Number of Reviews
11
Ranking in other categories
Email Archiving (6th)
Microsoft Exchange
Ranking in Email Applications
3rd
Average Rating
8.4
Reviews Sentiment
6.6
Number of Reviews
95
Ranking in other categories
Wireless Email (2nd)
 

Mindshare comparison

As of January 2026, in the Email Applications category, the mindshare of KerioConnect is 4.1%, down from 4.8% compared to the previous year. The mindshare of Microsoft Exchange is 10.6%, down from 11.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Applications Market Share Distribution
ProductMarket Share (%)
Microsoft Exchange10.6%
KerioConnect4.1%
Other85.3%
Email Applications
 

Featured Reviews

MM
Senior Systems Tech/Admin at Samco Software Inc.
A seamless setup ensures smooth communication with comprehensive support
We remain a partner with Sophos and use XG S Firewalls without AWS implementation. We only use Sophos endpoint and Sophos Central. We host some clients on-premise while others we host remotely. The VPN connection is easy and proprietary, so it's not open to any other VPN clients. Communication with other mail servers is seamless. It can communicate with Gmail and Outlook without issues, provided the DNS settings are correct. We monitor our servers and security logs, implementing GeoIP blocking. We frequently block China and India IPs due to brute force attacks on our servers. We have extensive experience with KerioConnect. Backing up and maintaining it is straightforward compared to Microsoft Exchange, making it administrator-friendly. On a scale of 1-10, this solution rates an 8.
SJ
Manager IT Support at Naubahar Bottling Company (Pvt.) Ltd. Gujranwala Pakistan
Efficient email management with seamless integration
We previously used Microsoft Exchange but have moved to an MDN email solution due to cost and user growth Microsoft Exchange is a user-friendly and easy-to-deploy solution, which is beneficial for handling emails even without professional support. It is effective in managing email integration…

Quotes from Members

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

Pros

"The user interface is good."
"What I like most about Kerio Connect is that it supports ActiveSync, and that is its most critical feature. The solution is also a nice, simple, robust, and stable mail server."
"Kerio Connect is secure, flexible, and easy to control from the user interface. It has many security features able to be controlled from one place, such as anti-spam. I have found it very convenient. Additionally, you can analyze log files and share folders which is helpful."
"KerioConnect has integration with 365. We can use Outlook, which has its client and can be used with Apple devices. It integrates with the App Store and Microsoft Office. It has a smart router. The spam filtering and antivirus are good."
"We use the solution as a mail server. It connects with Outlook and is used for calendaring and similar tasks."
"Backing up and maintaining it is straightforward compared to Microsoft Exchange, making it administrator-friendly."
"The solution is easy to maintain, unlike Exchange. It's easy to create multiple domains and back up and restore if needed. It also has good security features like anti-spam and antivirus."
"It's relatively simple to use."
"It is easy to set up."
"The search tools are good."
"We have found it to be a stable solution. It is scalable and easy to install."
"On-premises Microsoft Exchange is good because it protects data privacy."
"What I love about Microsoft Exchange is the good integration since 2013, particularly its integration with the calendar and other software such as Zoom, TeamViewer, AnyDesk, etc."
"The initial setup was straightforward and fast."
"It is stable."
"Exchange's interface is good. All of our engineers like it and are accustomed to using it."
 

Cons

"You cannot integrate with other services like Google Docs, Google Assistant, Google Calendar, etc."
"The search and archiving documentation capabilities need to be stronger."
"KerioConnect continues to improve with regular updates throughout the year. They must be added to the roadmap, which requires approval."
"We cannot compete with them because they're fully integrated with their applications."
"Having a native Outlook map integration would make Kerio Connect better."
"I would like to see better support from their support team."
"KerioConnect is stable as long as you use a strong password."
"Most of our clients use Outlook and Kerio Connect. Occasionally, Kerio can be a bit slow. They could make it faster to get onto the web interface without so much load time. It's just slow with Outlook, however, for some reason."
"At the end of the day, the biggest area for improvement is having better and more knowledgeable support technicians."
"The product or service could be improved in terms of Microsoft Outlook client compatibility."
"I don't have the best impression of customer service and support. It should be faster and more clear, and more human. T"
"More AI features would be good."
"It is costly, so it depends on how much you want to pay."
"An improvement would be to combine Exchange and Teams so that emails, calls, and chats can be integrated into one window."
"Microsoft needs to make some modifications to meet the current needs of the environment. For example, they need to add more cell service features because people work from home during the pandemic, and certain elements should be available as a mobile service."
"One major area for improvement is the need for repeated authentication when running a meeting."
 

Pricing and Cost Advice

"The solution's pricing depends on how long you plan to keep it because you pay on a per-year basis. You might have a one-time setup cost for something like Microsoft Exchange or a Linux mail server. I'd say this solution is expensive on a per-year basis, almost 2000-3000 dollars annually. It doesn't seem to pay off yet, so we're considering switching to another product."
"KerioConnect has a first-time cost and yearly subscription. It is not expensive."
"The pricing is about $3 per mailbox per month."
"The price of Kerio Connect is better when comparing it to others solutions."
"The product pricing is reasonable if you utilize its full suite of features."
"The price of Microsoft Exchange is reasonable."
"Its price is very affordable, and basically, it is the standard of the industry. We have the Exchange 365 subscription, which includes the usage of Exchange Online. I don't know the specific cost, but it is the retail price of Microsoft 365 E3 licenses. Microsoft's licensing is not very easy to understand. Microsoft changes rules every other day, which makes it difficult for us to understand the licensing not only for Exchange but also for other products. It can sometimes be really complex to understand what you need to have in order to comply with Microsoft licensing."
"It's a little bit expensive."
"The price of Microsoft Exchange could improve. In Egypt, the price keeps increasing."
"Microsoft Exchange is a very well-priced solution."
"The platform has a reasonable price."
"There is an annual cost to use Microsoft Exchange, and the price could be less expensive."
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Top Industries

By visitors reading reviews
Comms Service Provider
13%
Computer Software Company
11%
Manufacturing Company
9%
Performing Arts
8%
Computer Software Company
11%
Manufacturing Company
10%
Government
8%
Comms Service Provider
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise2
By reviewers
Company SizeCount
Small Business41
Midsize Enterprise28
Large Enterprise35
 

Questions from the Community

What do you like most about KerioConnect?
The most valuable features are security and privacy because you installed it on your server, within your company premises, not in the cloud.
What is your experience regarding pricing and costs for KerioConnect?
The pricing is very easy to understand. As a partner, we have a monitoring system that informs us when subscriptions expire, allowing us to handle renewals. The pricing is very competitive.
What needs improvement with KerioConnect?
Since KerioConnect is a setup and go solution, everything works on its own. The only administrative tasks required are keeping it up to date, monitoring security logs, and ensuring protection from ...
How does Zimbra Collaboration compare with Microsoft Exchange?
Zimbra is a free, open source collaborative software suite. The features I like best are the ease of integration and the email, calendar, and collaboration server with web interface. In addition, I...
What do you like most about Microsoft Exchange?
The initial setup was straightforward and fast.
What is your experience regarding pricing and costs for Microsoft Exchange?
I am aware of pricing aspects, and I would say it is affordable for what it is.
 

Also Known As

No data available
Exchange, MS Exchange
 

Overview

 

Sample Customers

Southern Tier Brewing Company, Innotta, Baustoff + Metall, Hamifleurs, Chanson TV, Ryman Stationery
Paderborn-Lippstadt Airport, Scitec Nutrition, British Airways, InnoGames, Osteology Foundation, Franz Haniel & Cie. GmbH, NTC Contracting
Find out what your peers are saying about KerioConnect vs. Microsoft Exchange and other solutions. Updated: December 2025.
881,082 professionals have used our research since 2012.