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Amazon WorkMail vs Microsoft Exchange Online 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:
 

ROI

Sentiment score
5.1
Companies reduced costs by 50% and improved communication reliability using Amazon WorkMail and SES, enhancing financial benefits.
Sentiment score
7.2
Microsoft Exchange Online reduces costs, enhances reliability, and improves ROI with streamlined operations and comprehensive security integration.
The phishing-related investigation and remediation time has been reduced by roughly thirty to forty percent due to better visibility, message tracing, and integration with Microsoft security tools.
Senior Security Engineer at Softcell Technologies Limited
 

Customer Service

Sentiment score
5.1
Amazon WorkMail's customer service is efficient but inconsistent, with mixed experiences in support responsiveness and follow-up challenges.
Sentiment score
6.2
Microsoft Exchange Online support is generally satisfactory but varies; users report mixed experiences and sometimes need multiple contacts.
We have sent some emails and they have responded promptly, so we are satisfied.
Co-Founder & CTO at a consultancy with 11-50 employees
Amazon WorkMail is one of those services that just works out of the box for me.
Owner at Marinov
 

Scalability Issues

Sentiment score
7.4
Amazon WorkMail is praised for scalability, though cost concerns drive some to transfer; varying AWS usage influences scalability assessment.
Sentiment score
7.7
Microsoft Exchange Online is scalable and flexible, supporting large user bases and seamless integration, ideal for growing businesses.
I do not have any concerns regarding the scalability of Amazon WorkMail, as we are sending about 40,000 to 50,000 emails per day, doing both transactional and batch with a queuing mechanism internally.
Co-Founder & CTO at a consultancy with 11-50 employees
 

Stability Issues

Sentiment score
8.1
Amazon WorkMail and SES are highly praised for their reliability, with stable performance and no reported issues.
Sentiment score
8.0
Microsoft Exchange Online is highly reliable and stable, with most users reporting minimal downtime and effective issue resolution.
 

Room For Improvement

Amazon WorkMail needs improvements in features, pricing, technical support, integration, and user interface to enhance overall user experience.
Microsoft Exchange Online needs better security, integration, pricing, user-friendliness, scalability, and support while incorporating AI features.
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.
Owner at Marinov
A more unified management interface and deeper integration visibility across Exchange, Defender, and Microsoft 365 security tools would make day-to-day operations more efficient for administrators and SOC teams.
Senior Security Engineer at Softcell Technologies Limited
In third world countries, they need local support.
IT Officer at a financial services firm with 501-1,000 employees
 

Setup Cost

Enterprise buyers have mixed views on Amazon WorkMail's pricing, highlighting both affordability and potential cost concerns compared to competitors.
Microsoft Exchange Online costs $4-$36/user/month, with limited discounts, offering valuable features and security despite potentially higher costs.
I have heard that compared to other providers, it is considerably cheaper.
Co-Founder & CTO at a consultancy with 11-50 employees
 

Valuable Features

Amazon WorkMail offers scalable, secure email management with AWS integrations, machine learning enhancements, and user-friendly API usage.
Microsoft Exchange Online offers seamless integration, high security, global usability, cost savings, and efficient management with frequent updates.
I find the feature that checks how many emails have been successfully sent and how many of them have been opened very useful, because in our application, we know the usage of the emails.
Co-Founder & CTO at a consultancy with 11-50 employees
Amazon WorkMail offers excellent classification options and adheres to the IMAP email protocol standards.
Owner at Marinov
It allows us to correlate email threats with identity, endpoint, and user activity data in a single investigation workflow, which significantly improves phishing detection, incident response time, and overall SOC efficiency.
Senior Security Engineer at Softcell Technologies Limited
It protects from malware, phishing, and bulk email attacks.
IT Officer at a financial services firm with 501-1,000 employees
 

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)
Microsoft Exchange Online
Ranking in Email Applications
2nd
Average Rating
8.6
Reviews Sentiment
7.2
Number of Reviews
93
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2026, in the Email Applications category, the mindshare of Amazon WorkMail is 8.4%, down from 9.5% compared to the previous year. The mindshare of Microsoft Exchange Online is 9.0%, down from 13.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Applications Mindshare Distribution
ProductMindshare (%)
Microsoft Exchange Online9.0%
Amazon WorkMail8.4%
Other82.6%
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.
Yogesh Autade - PeerSpot reviewer
Senior Security Engineer at Softcell Technologies Limited
Integrated email security has improved phishing response and provides better threat visibility
Microsoft Exchange Online could be improved with more intuitive administration workflows, better troubleshooting visibility, and simpler mail flow analysis for complex environments. We would also appreciate more granular reporting, faster access to detailed message tracking data, and improved alerting around suspicious mailbox activity to help security and messaging teams investigate issues more efficiently. One area where Microsoft Exchange Online could improve is the administrative user experience. Some advanced mail flow, compliance, and troubleshooting tasks still require navigating multiple Microsoft portals. A more unified management interface and deeper integration visibility across Exchange, Defender, and Microsoft 365 security tools would make day-to-day operations more efficient for administrators and SOC teams.
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Top Industries

By visitors reading reviews
Comms Service Provider
10%
University
9%
Manufacturing Company
7%
Financial Services Firm
7%
Financial Services Firm
10%
Comms Service Provider
8%
Manufacturing Company
8%
Computer Software Company
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 Business41
Midsize Enterprise17
Large Enterprise41
 

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 Microsoft Exchange Online?
If I segment it into three points: low price, average, and high price, I would place Microsoft Exchange Online between average and high price.
What needs improvement with Microsoft Exchange Online?
Microsoft Exchange Online could be improved with more intuitive administration workflows, better troubleshooting visibility, and simpler mail flow analysis for complex environments. We would also a...
What is your primary use case for Microsoft Exchange Online?
Microsoft Exchange Online serves as our enterprise email hosting platform, providing secure mail flow management and centralized messaging services for users across multiple locations. From a secur...
 

Also Known As

Amazon SES
Exchange Online, Exchange Online Plan 1, Exchange Online Plan 2, MS Exchange Online
 

Overview

 

Sample Customers

Expedia, Intuit, Royal Dutch Shell, Brooks Brothers
Bank Alfalah Ltd., Paderborn-Lippstadt Airport, Blue Star Infotech, Scitec Nutrition, Resolution Films, British Airways, Empire Cinemas, InnoGames
Find out what your peers are saying about Amazon WorkMail vs. Microsoft Exchange Online and other solutions. Updated: June 2026.
900,747 professionals have used our research since 2012.