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Amazon WorkMail vs KerioConnect comparison

 

Comparison Buyer's Guide

Executive Summary

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
7.7
Number of Reviews
12
Ranking in other categories
Cloud Email (2nd)
KerioConnect
Ranking in Email Applications
8th
Average Rating
6.8
Reviews Sentiment
7.9
Number of Reviews
10
Ranking in other categories
Email Archiving (7th)
 

Mindshare comparison

As of May 2025, in the Email Applications category, the mindshare of Amazon WorkMail is 9.7%, down from 10.3% compared to the previous year. The mindshare of KerioConnect is 4.7%, up from 3.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Applications
 

Featured Reviews

Michael Olayemi - PeerSpot reviewer
Provides free messages and helps to keep customers updated
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. I would only suggest that Amazon WorkMail relax the rules for using Amazon SES in production. When you create an account, it starts in Sandbox mode, which means you can't use it in production right away. You must go through a process, message Amazon, and request to move it to production. Since Amazon is a big company, I feel customers shouldn't need this permission to use the service in production.
David Bloomer - PeerSpot reviewer
Lightweight, simple, and robust; easy to maintain and doesn't require a lot of system resources to run
Kerio Connect does as advertised, so there are no real issues with the product itself. It's developed regularly, so there are constant updates. Possibly, the support and development have lessened since they've sold the company, but as far as the product itself is concerned, there isn't anything that I would suggest needs improvement. If I'm being picky, Kerio Connect uses a proprietary, mappy atom for Outlook, and it would be nice if they used a native mappy connection instead, but that's the only additional feature that I would like to see in its next release. If they have native Outlook map integration, that would be great, but other than that, it's got all the functions that I think a mail server should have.

Quotes from Members

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

Pros

"We use the tool for transactional emails and marketing."
"Amazon WorkMail integrates with Route 53 and other AWS services, providing a seamless experience when using AWS infrastructure."
"The most valuable thing is that emails sent through SES have a delivery rate of greater than ninety percent."
"The best feature is that Amazon SES provides verified email messages."
"The product is very user-friendly."
"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."
"It is very stable. I haven't faced any issues."
"It is highly available and scalable. It is also highly reliable. I don't lose any of the messages or emails. If there is an issue where the email sent operation failed, Amazon as a platform ensures that the send operation is retried, and the email reaches its destination. This way, it is highly reliable."
"The most valuable features are its ease of use, excellent pricing, and it is platform agnostic."
"It's relatively simple to use."
"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."
"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."
"We have contacted technical support a handful of times and received some assistance."
"We use the solution as a mail server. It connects with Outlook and is used for calendaring and similar tasks."
"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."
 

Cons

"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."
"WorkMail is not available in all the regions."
"I would like to see detailed reports on email success and failure rates."
"Amazon WorkMail's user interface could be more intuitive and user-friendly."
"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."
"There is room for improvement in the scalability."
"The only issue is the price, which is far too expensive."
"When we first set up an email on Amazon SES, they had to verify it, which was not fast enough."
"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"
"Having a native Outlook map integration would make Kerio Connect better."
"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."
"You cannot integrate with other services like Google Docs, Google Assistant, Google Calendar, etc."
"KerioConnect continues to improve with regular updates throughout the year. They must be added to the roadmap, which requires approval."
"KerioConnect is stable as long as you use a strong password."
"The search and archiving documentation capabilities need to be stronger."
 

Pricing and Cost Advice

"The solution should improve its price."
"It's very cheap. The cheapest among all the services available."
"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."
"WorkMail does require a license, it is, per user."
"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 pricing is about $3 per mailbox per month."
"The price of Kerio Connect is better when comparing it to others solutions."
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Top Industries

By visitors reading reviews
Computer Software Company
17%
University
9%
Comms Service Provider
7%
Healthcare Company
7%
Computer Software Company
16%
Comms Service Provider
13%
Government
8%
Manufacturing Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about Amazon WorkMail?
We use the tool for transactional emails and marketing.
What needs improvement with Amazon WorkMail?
Amazon WorkMail's user interface could be more intuitive and user-friendly. Integration with Gmail using both SMTP and POP3 would be beneficial.
What advice do you have for others considering Amazon WorkMail?
Currently, I don't have any advice about using Amazon WorkMail. Since I only use AWS and am unfamiliar with its competitors, I can't recommend it.
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?
KerioConnect has a first-time cost and yearly subscription. It is not expensive.
What needs improvement with KerioConnect?
KerioConnect continues to improve with regular updates throughout the year. They must be added to the roadmap, which requires approval. In larger organizations, the server's capabilities and the da...
 

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: April 2025.
850,028 professionals have used our research since 2012.