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Amazon WorkMail vs KerioConnect 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

Amazon WorkMail
Ranking in Email Applications
4th
Average Rating
8.4
Reviews Sentiment
6.4
Number of Reviews
14
Ranking in other categories
Cloud Email (2nd)
KerioConnect
Ranking in Email Applications
8th
Average Rating
7.2
Reviews Sentiment
7.3
Number of Reviews
11
Ranking in other categories
Email Archiving (7th)
 

Mindshare comparison

As of August 2026, in the Email Applications category, the mindshare of Amazon WorkMail is 9.9%, up from 9.3% compared to the previous year. The mindshare of KerioConnect is 3.4%, down from 4.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Applications Mindshare Distribution
ProductMindshare (%)
Amazon WorkMail9.9%
KerioConnect3.4%
Other86.7%
Email Applications
 

Featured Reviews

GM
Owner at Marinov
Centralized email accounts have streamlined routing, security checks, and long-term organization
While using Amazon WorkMail over time, I haven't encountered substantial disappointments, but there have been usual glitches with the web interface. For instance, while the service is generally 99.5% perfect, I experience issues like the folder structure I set up sometimes not remembering the state of expanded and collapsed nodes after refreshing the page. This lack of persistence in which nodes are collapsed or opened can be frustrating. However, since it's a minor technical issue, I doubt the average user would notice it. If Amazon WorkMail were not discontinuing, I wouldn't think there is much to improve or enhance about it. It is standard enough and easy to use, and any glitches are minor, not worth evolving or disrupting its current functionality. As for whether the user interface is intuitive and if I'm satisfied with its flexibility and customizability, there are some minor features lacking, but I don't feel a need for changes since it works as designed. The most crucial aspect is that I can set up my address book with the complex organizational structure needed for the accounts connecting to AWS. The lower-level functionalities suit me well enough. Other services often have customizable views of email representations with senders, subjects, and even snippets of content. While my external application on mobile can show customizable lines with my email list, Amazon WorkMail does not offer that feature. I don't really need it, but it would be a nice addition for power users.
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.

Quotes from Members

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

Pros

"The best feature is that Amazon SES provides verified email messages."
"Amazon SES can handle a high volume of emails, making it suitable for organizations with large email lists or that need to send a large number of emails on a regular basis."
"We have cut our costs in half."
"We use the tool for transactional emails and marketing."
"It is very stable. I haven't faced any issues."
"WorkMail works very well, and the functionality is fine."
"The most valuable thing is that emails sent through SES have a delivery rate of greater than ninety percent."
"Despite being an end-user service on AWS, the backend is complex enough to enable many useful features, I invested time in configuring it, and it worked flawlessly for six years."
"This solution is our SMB alternative to Exchange, installed for more than forty SMB customers in a Linux environment with all of the collaboration features."
"Backing up and maintaining it is straightforward compared to Microsoft Exchange, making it administrator-friendly."
"As long as the operating is stable, the Kerio connect will be very stable as well, so we don't have any problem with it."
"We use the solution as a mail server. It connects with Outlook and is used for calendaring and similar tasks."
"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."
"The most valuable features are its ease of use, excellent pricing, and it is platform agnostic."
"The most valuable features are security and privacy because you installed it on your server, within your company premises, not in the cloud."
"The user interface is good."
 

Cons

"I would like to see detailed reports on email success and failure rates."
"If we can have a completely managed backup solution where we have a tiered backup or a tiered archival to be able to retrieve emails, it would be great."
"There is room for improvement in the scalability."
"The product should improve technical support."
"It would be ideal to have detailed data and reporting on email opens, clicks, bounces, and other metrics, as well as integration with other business intelligence tools."
"Email service is definitely a requirement from an enterprise standpoint. Many organizations have their own on-premise email services, which take a lot of memory, backup, and other resources. If we can have a completely managed backup solution where we have a tiered backup or a tiered archival to be able to retrieve emails, it would be great. I would like to be able to retrieve emails in real-time (hot retrieval), over the 90-days period (warm retrieval), and over the one-year period (cold retrieval). It would be useful to have tiered backup and retrieval. It would help us in managing emails better and have a better backup solution. So, backup is something that we require."
"There is room for improvement in the support. It's just that customer support, though good, takes time to resolve issues."
"The solution is quite low-level and lacks some advanced features. For example, it doesn't provide tracking capabilities, such as knowing how many users opened an email, which is crucial for email marketing. You would need to integrate these analytics with other tools to get them. I need to know if there has been a bounce and how customers interacted with the email."
"You cannot integrate with other services like Google Docs, Google Assistant, Google Calendar, etc."
"This is just a cost, it's not something that's driving our business forward; it's just foundational."
"KerioConnect is stable as long as you use a strong password."
"We are considering switching to Microsoft Exchange. One reason is that it doesn't improve our workflow and doesn't integrate well with Microsoft 365 applications."
"I would like to see better support from their support team."
"The solution could improve the redundancy because we only have one copy of the Kerio Connect server on our hardware. The next step for us is to move to the cloud and if Kerio does not have a cloud version available they should release one"
"Most of our clients use Outlook and Kerio Connect. Occasionally, Kerio can be a bit slow."
"I don't particularly like this solution. I would not recommend this solution to others."
 

Pricing and Cost Advice

"It's very cheap. The cheapest among all the services available."
"The solution should improve its price."
"WorkMail does require a license, it is, per user."
"I rate the solution's pricing as one out of ten. It is close to being cheap. Sometimes, the tool offers a generous amount of free messages, up to 40,000, which is great for startups like ours. This means that we don't accumulate any costs for some months because we stay within the free usage tier. When we exceed the free allocation, the costs are reasonable, and no hidden charges exist."
"KerioConnect has a first-time cost and yearly subscription. It is not expensive."
"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."
"The price of Kerio Connect is better when comparing it to others solutions."
"The pricing is about $3 per mailbox per month."
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Top Industries

By visitors reading reviews
Manufacturing Company
13%
Comms Service Provider
10%
University
8%
Financial Services Firm
7%
Comms Service Provider
13%
Manufacturing Company
11%
Construction Company
9%
Retailer
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise2
Large Enterprise5
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise2
 

Questions from the Community

What needs improvement with Amazon WorkMail?
While using Amazon WorkMail over time, I haven't encountered substantial disappointments, but there have been usual glitches with the web interface. For instance, while the service is generally 99....
What advice do you have for others considering Amazon WorkMail?
When assessing the security features offered by Amazon WorkMail, such as encryption protocols, I check the security protocols on my phone using an external application that displays them immediatel...
What is your primary use case for Amazon SES?
My usual use cases for Amazon WorkMail started from my interest in all the AWS services, which are numerous, like hundreds, and how I could set up an online document service, something like Google ...
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 ...
What is your primary use case for KerioConnect?
Small medium-sized businesses are our primary focus, particularly in warehouse distribution and retail sectors. We are a reseller and purchase directly from Sophos.
 

Also Known As

Amazon SES
No data available
 

Overview

 

Sample Customers

Expedia, Intuit, Royal Dutch Shell, Brooks Brothers
Southern Tier Brewing Company, Innotta, Baustoff + Metall, Hamifleurs, Chanson TV, Ryman Stationery
Find out what your peers are saying about Amazon WorkMail vs. KerioConnect and other solutions. Updated: August 2026.
908,800 professionals have used our research since 2012.