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Microsoft Exchange Online vs ProtonMail 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

Microsoft Exchange Online
Ranking in Email Applications
2nd
Average Rating
8.6
Reviews Sentiment
7.4
Number of Reviews
90
Ranking in other categories
No ranking in other categories
ProtonMail
Ranking in Email Applications
10th
Average Rating
8.6
Reviews Sentiment
8.0
Number of Reviews
2
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2025, in the Email Applications category, the mindshare of Microsoft Exchange Online is 13.8%, down from 15.7% compared to the previous year. The mindshare of ProtonMail is 5.9%, up from 3.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Applications
 

Featured Reviews

NancyHartman - PeerSpot reviewer
Effective collaboration achieved with versatile features and good customer service
There are always improvements needed. My personal issue with using OfficeSuite and the Exchange Server is that one has to cobble together a whole bunch of different applications. Therefore, a lot of scripting and programming knowledge is necessary. I am not an IT person; I am an educator, a trainer, a user. I want to get the work done. However, I find that the Exchange Server and possibly the way our company has set up access permissions require extensive programming knowledge. It might take six to eight weeks to get a programmer's time to build something, whereas I can use something like Smartsheet that will do everything I want without needing a programmer. Smartsheet is more end-user friendly compared to a Microsoft product. Microsoft believes an expert IT person should manage everything, however, I want to manage things on my own in a simplified way. That is not easy using the Exchange Server or Microsoft Office. It is not end-user friendly for development, and a programmer is needed. Once set up, using them as an end-user is fine. I find that the automations are not robust, and the FedRAMP systems are not robust. I have a few issues with Exchange and Office, but there's nothing I can do about it.
Secure email communication facilitates safe financial exchanges and enhances data privacy
I use ProtonMail for exchanging invoicing with clients, managing financial information, and receiving notifications from bank accounts and investment brokers. It's dedicated to high-importance communication involving financial information The auto encryption of attachments is valuable. ProtonMail…

Quotes from Members

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

Pros

"This solution makes it very easy to receive and detect problems about the mail flow and offers very good reporting. In general, it's very easy to manage the organization's mailboxes."
"One of the important features is the collaboration tool used in Office 365. The security and DLP mechanisms are also quite good."
"Microsoft has many consultants who can provide support."
"Microsoft Exchange Online is easy to use. You have a common storage where people can store documents. It also helps with version control."
"I like that Exchange Online is easy to use and that I do not need to maintain the previous Exchange Server. I also do not need to worry about the security of the Exchange Server. If there are any issues, then it will be the service provider's problem and not mine."
"I would rate Exchange Online's stability nine out of ten."
"The solution is easy to use and the cloud version has taken a lot of challenges away from the user."
"A valuable feature of the solution is its global usability."
"What I appreciate most about ProtonMail is that they are trusted, which is why I choose them."
"The auto encryption of attachments is valuable."
 

Cons

"Microsoft needs to lower the price of the extra production add-ins for Exchange Online."
"When we need to purchase additional licenses for additional users, the process is slow."
"I would like to have the option to have my electronic signature posted on my emails by default. I am able to add it manually but cannot get it by default."
"The pricing could be a bit lower."
"The solution could improve with the integrations with some of the known applications is still not possible, there must be more connectors."
"Documentation is lacking."
"Microsoft Exchange Online should have a faster search feature."
"For example, recently there were some spam incidents that Microsoft does not currently mitigate because they have another paid solution to do so. It would be nice to integrate the security and the anti-spam (i.e. the fake links, etc.) along with the Exchange Online default."
"I think it is good but I feel that only tech-savvy people use ProtonMail. It is not that popular among other people."
"One improvement could be the integration between ProtonMail and Proton Pass, allowing sharing of specific secrets via email."
 

Pricing and Cost Advice

"The price of the solution could be less expensive."
"The subscription fee is monthly."
"The pricing for Microsoft Exchange Online is quite reasonable, in my opinion. Many licensing options are available so that we can choose based on the customer's needs. For example, if a customer only requires mailbox features, we can recommend Plan One or Plan 2. We can suggest an E3 or E5 license if they need the entire Office suite. There are also premium subscriptions for enterprise customers, offering additional security features. Overall, I don't find the pricing costly because Microsoft provides many features and security capabilities, making it reliable for all customers, depending on their requirements."
"Our organization pays for a corporate license to use the solution."
"The product is expensive and has an annual subscription."
"There is an annual license required to use this Microsoft Exchange Online."
"We have a license per user scenario."
"Microsoft Exchange Online is an affordable solution."
Information not available
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Financial Services Firm
9%
Comms Service Provider
7%
Educational Organization
6%
Computer Software Company
15%
Educational Organization
12%
Comms Service Provider
12%
Media Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

What do you like most about Microsoft Exchange Online?
The benefits are widespread and effective communication. We use Microsoft Teams for meetings within and outside our organization. Additionally, Teams can be used for chat, allowing us to track comm...
What is your experience regarding pricing and costs for Microsoft Exchange Online?
The cost of Microsoft Exchange Online varies between $4 and $25 per user per month, depending on the different plans we use for different users.
What needs improvement with Microsoft Exchange Online?
The mobile version of Microsoft Outlook has limited features compared to the desktop version. We find fewer features in the mobile version of Microsoft Exchange Online, so that could be improved if...
What is your experience regarding pricing and costs for ProtonMail?
The pricing is competitive, offering good value on the average plan. It’s approximately $100 for annual billing.
What needs improvement with ProtonMail?
The UI was previously cumbersome, however, it has improved. One improvement could be the integration between ProtonMail and Proton Pass, allowing sharing of specific secrets via email. However, thi...
What is your primary use case for ProtonMail?
I use ProtonMail for exchanging invoicing with clients, managing financial information, and receiving notifications from bank accounts and investment brokers. It's dedicated to high-importance comm...
 

Also Known As

Exchange Online, Exchange Online Plan 1, Exchange Online Plan 2, MS Exchange Online
No data available
 

Overview

 

Sample Customers

Bank Alfalah Ltd., Paderborn-Lippstadt Airport, Blue Star Infotech, Scitec Nutrition, Resolution Films, British Airways, Empire Cinemas, InnoGames
Wall street journal,The New york times, The Gurdian, Forbes, Fox News
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856,873 professionals have used our research since 2012.