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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
7.0
Microsoft Exchange Online offers significant cost savings and efficiency, recouping investments quickly and outperforming on-premise solutions.
 

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 tech support is generally excellent but varies in response time and agent expertise.
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
7.8
Microsoft Exchange Online is celebrated for scalable, reliable cloud-based expansion, accommodating diverse organizational sizes, despite some cost concerns.
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 stable and reliable with minimal downtime, quick recovery, and significant stability improvements.
 

Room For Improvement

Amazon WorkMail needs improvements in features, pricing, technical support, integration, and user interface to enhance overall user experience.
Microsoft Exchange Online users face challenges with integration, security, scalability, optimization, support, documentation, and pricing, needing significant improvements.
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
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's pricing is seen as reasonable but varies, appreciated for value and integration despite regional cost concerns.
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, robust security, scalable solutions, and cloud-based features for efficient remote communication and administration.
The encryption of emails, both in transit and at rest, has benefited our security strategy as it is a layer of security that provides us better confidence for customers and also internally tracks the security aspects.
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
Microsoft Exchange Online Protection helps by providing cloud-based security.
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
3rd
Average Rating
8.6
Reviews Sentiment
7.2
Number of Reviews
92
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of May 2026, in the Email Applications category, the mindshare of Amazon WorkMail is 7.5%, down from 9.7% compared to the previous year. The mindshare of Microsoft Exchange Online is 9.3%, down from 14.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Applications Mindshare Distribution
ProductMindshare (%)
Microsoft Exchange Online9.3%
Amazon WorkMail7.5%
Other83.2%
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.
AM
Assistant General Manager, IT Infrastructure at SAMI Pharmaceuticals (Pvt.) Limited.
Offers flexibility and cost-effectiveness with multiple service options but could improve support and mobile features
There are many things to consider about email management in Microsoft Exchange Online. The online management is good, the storage is sufficient, and we use most of the features such as the custom rules in Microsoft Exchange Online, which we cannot find in any other email solution. That is a very good option, as we have many options to create custom rules in Microsoft Exchange Online. Regarding security features in Microsoft Exchange Online, we also use Defender for Exchange which includes the basic Exchange Online protection that has spam and threat controls. The use of Defender is beneficial for our security. The flexibility of choosing plans in Microsoft Exchange Online is good. We have chosen the best plan for our use, including multiple licenses such as plan one and business basics, which leads us towards cost-effectiveness, and the pay-as-you-go option is more flexible. Microsoft Exchange Online is very scalable.
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Top Industries

By visitors reading reviews
Comms Service Provider
10%
University
10%
Computer Software Company
7%
Manufacturing Company
6%
Financial Services Firm
8%
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 Business40
Midsize Enterprise16
Large Enterprise40
 

Questions from the Community

What needs improvement with Amazon WorkMail?
We are satisfied with Amazon WorkMail, as it is able to send emails and provide receipts, including the read and other statuses. Since we are doing more API side integrations, there does not seem t...
What advice do you have for others considering Amazon WorkMail?
From the communication aspects, working with Amazon WorkMail has been seamless and cost-effective. My customers do not make any use of Amazon WorkMail's compatibility with Microsoft Active Director...
What is your primary use case for Amazon SES?
We are an integrator, and we have a product in which we use Amazon WorkMail. We send emails on a daily basis in a batch mode to customers. We have about 50,000 emails across various customers.
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?
There is room for improvement in Microsoft Exchange Online. Technical support for Microsoft is good, but in all fairness, I sometimes think more can be done. I have personally tried exploring with ...
What is your primary use case for Microsoft Exchange Online?
I currently work with a Microsoft partner and I support users that use Microsoft Exchange Online. I also use Microsoft Exchange Online myself. I use the shared calendar feature of Microsoft Exchang...
 

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: April 2026.
893,244 professionals have used our research since 2012.