I just use it for email and scheduling work within a team.
Principal Analyst at a tech services company with 1,001-5,000 employees
Works fine, but its interface can be better
Pros and Cons
- "It is for emails, and it seems to work okay."
- "I don't like it in general. It sort of has that Microsoft flavor to it, which is just the style they use and the way they color things and lay them out."
What is our primary use case?
What is most valuable?
It is for emails, and it seems to work okay.
What needs improvement?
I don't like it in general. It sort of has that Microsoft flavor to it, which is just the style they use and the way they color things and lay them out.
For how long have I used the solution?
I have been using Microsoft Exchange Online for seven months.
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Microsoft Exchange Online
September 2025

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What do I think about the stability of the solution?
It is stable. I don't recall any downtime.
What do I think about the scalability of the solution?
It is scalable. We have probably hundreds of users. My immediate group has 10 users, and the larger group has 50 users.
How are customer service and support?
They seem okay.
How was the initial setup?
The initial setup is pretty much straightforward. They are full of secure-everything. They want your password again after a couple of weeks. Everybody has to be security safe, so, of course, that's why they do it.
What other advice do I have?
I would recommend investing in support. None of these systems are plug and play.
I would rate Microsoft Exchange Online a seven out of ten.
Which deployment model are you using for this solution?
Private Cloud
Disclosure: My company does not have a business relationship with this vendor other than being a customer.

Tech consultant at select softwares
Massive storage capacity with 100 GB per user mailbox
Pros and Cons
- "The online version is faster, as it is a cloud instance. We can have massive mailbox capacity: 100 GB per user, which is huge. We can't provision such capacity internally, as the company would get burnt out paying for mailbox storage."
- "I would prefer an anti-malware functionality in at least the basic version."
How has it helped my organization?
In terms of mail, it is on the cloud and there is a lot of dependency on the internal server, which is not exactly great.
The online version is faster, as it is a cloud instance. We can have massive mailbox capacity: 100 GB per user, which is huge. We can't provision such capacity internally, as the company would get burnt out paying for mailbox storage. You have no idea how relieved the Fortune 500 company mail admins were with this.
What is most valuable?
The onboard anti-spam is pretty good. Therefore, you do not need to invest in an additional anti-spam product. If needed, invest in an anti-malware solution, specifically for weeding out damage at the email level.
It has massive storage capacity with 100 GB per user mailbox.
What needs improvement?
I would prefer an anti-malware functionality in at least the basic version.
For how long have I used the solution?
I have deployed Office 365 and migrated my on-premise version to the cloud. Though I was a bit skeptical to move when money and backup functionality came into picture, the migration started to gain momentum. It has been more than four years since we started to use it.
What do I think about the stability of the solution?
There is no server downtime. It never runs out of mechanical resources as it is the cloud version.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Buyer's Guide
Microsoft Exchange Online
September 2025

Learn what your peers think about Microsoft Exchange Online. Get advice and tips from experienced pros sharing their opinions. Updated: September 2025.
868,787 professionals have used our research since 2012.
CEO at Shivaami Cloud Services Pvt. Ltd.
It is a stable product, but there are challenges regarding user provisioning.
Pros and Cons
- "I have not had issues with stability of the product."
- "I would like to let new users know that there are challenges regarding user provisioning, HRMS and the AD. Also, the data migration integrity needs to be checked in terms of the old data."
What is our primary use case?
My primary use of this solution is for emailing and for the e-calendar.
What needs improvement?
I cannot see anything that needs room for improvement at this time.
For how long have I used the solution?
One to three years.
What do I think about the stability of the solution?
I have not had issues with the stability of the product.
What do I think about the scalability of the solution?
Regarding scalability, we initially did have some issues with scalability. We have 150 people using the product.
How are customer service and technical support?
Tech support is a challenge at times. They take a long time to respond. Sometimes we have to wait two to three days for a response. They do help, at that point, but the response time is slow.
How was the initial setup?
The initial setup was not complex. There was a learning curve, but we overcame the challenge. We used the Microsoft website to help us with our questions.
What's my experience with pricing, setup cost, and licensing?
The pricing is a bit more expensive than other solutions.
Which other solutions did I evaluate?
We also have entities that use G Suite, and we have noticed that it is much smoother. We also considered IBM products, but we did not truly consider that as an option because of our Active Directory.
What other advice do I have?
I would like to let new users know that there are challenges regarding user provisioning, HRMS and the AD. Also, the data migration integrity needs to be checked in terms of the old data.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Alliance Manager at Berca Hardaya Perkasa
Using Microsoft Exchange is the easiest way to sync with Outlook
What is our primary use case?
- A lot of mobile workers, and all well-known workers with Microsoft Outlook
- Using Microsoft Exchange is the easiest way to sync with Outlook.
How has it helped my organization?
Now we move to opex, but the problem is, the cost is more expensive than other online email solutions.
What is most valuable?
We are using E3, but actually, users only use email and not Teams because they are not familiar with Teams.
What needs improvement?
- Microsoft Teams, and anti-spam, because a lot of spam still comes from outside
- Create the easiest tools to migrate from other email solutions.
For how long have I used the solution?
One to three years.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Network and Security consultant at a energy/utilities company with 201-500 employees
It is a scalable product. We easily use it for 500 employees.
Pros and Cons
- "It is a scalable product. We are using it for 500 users."
- "I have found that Microsoft has vulnerabilities when it comes to Exchange Online. It has become the port of a lot of hacker attacks."
What is our primary use case?
I have found that Exchange Online is a wonderful product with good capabilities to manage the administration of my business.
What needs improvement?
I have found that Microsoft has vulnerabilities when it comes to Exchange Online. It has become the port of a lot of hacker attacks. We investigated the issue, and opened a ticket and the support told us to upgrade from E3 to E5. We upgraded, but we found ourselves still being attacked daily.
In addition, I cannot see good reporting tools. The vulnerability in security is in dire need of improvement. If anyone has a username or a password of an admin, you can access and then go live for everything. Microsoft suggests a two-factor authentication to resolve the issue. But, it is not always helpful.
For how long have I used the solution?
One to three years.
What do I think about the scalability of the solution?
It is a scalable product. We are using it for 500 users at present. It is a sizeable network.
How is customer service and technical support?
The tech support is good. If I have issues, they respond within an hour of my call. They are generally knowledgeable and provide solutions.
How was the initial setup?
The setup was easy, and took only an hour.
What was our ROI?
This solution really does save us a lot of time. And, we saved a significant amount of money by using this service.
What's my experience with pricing, setup cost, and licensing?
We have a license per user scenario.
Which other solutions did I evaluate?
We have looked at FireEye and Dynatrace as possible other options for protection. We also considered Trend Micro for sandbox protection.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Director with 11-50 employees
It Integrates Flawlessly With Other Microsoft Products.
Pros and Cons
- "I think there should be an incorporation of DLP on the business premium version of Exchange, as well."
What is our primary use case?
I primarily use this solution for an email bank for my organization.
How has it helped my organization?
From the security point of view, you can specify the IP range from the area your system should be connected. You can have the authentication based on the user certificates of your Active Directory. This improves the security, as well. There is a flawless integration. This is something I like about Exchange.
What needs improvement?
I think there should be an incorporation of DLP on the business premium version of Exchange as well.
For how long have I used the solution?
One to three years.
What do I think about the stability of the solution?
There have been some occasional deviations, but overall it is a stable product.
What do I think about the scalability of the solution?
We have 3,000 users. We have not encountered any issues with scalability of the product.
Which solution did I use previously and why did I switch?
A long time ago we used Zimbra and Postmaster. In comparison, in terms of manageability there was a concern with those solutions. Exchange excels in comparison.
How was the initial setup?
The implementation only took us about an hour. You just connect easily, set up the domain, and you are good to go! We implemented it for 3,000 users.
What's my experience with pricing, setup cost, and licensing?
The price is a bit high. It is especially expensive in the Indian market.
Which other solutions did I evaluate?
When we were looking at other solutions, we noticed that Exchange has a better collaborative approach with SharePoint, as well. That is important for us. In terms of the DLP, others are using endpoint DLP, but not the email DLP like Exchange is currently doing.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Infrastructure Architect at a tech services company with 5,001-10,000 employees
I really like the unlimited archiving, the hold and redemption policy functionality.
Pros and Cons
- "Tech support has been great, when necessary."
- "It is a stable, and highly scalable product."
- "Migration can be an issue if you do not have a good audit process."
- "Functionality wise, I can't really say it's improved from Exchange Online, I think it's not so much change on-premise. It's about the same. Other than that, it's the extra features that make a difference, really"
What is our primary use case?
We primarily use this as a business solution for service desk, mails and the automation process. This year, we did a migration process from Exchange to Exchange Online, and that included everything that goes with that.
How has it helped my organization?
A better approach for them to use Exchange Online was to have the host serve us in a cloud service. Functionality wise, I can't really say it's improved from Exchange Online, I think it's not so much change on-premise. It's about the same. Other than that, it's the extra features that make a difference, really.
I think with Exchange, it's a lot of integration functionality with the Skype for business. It's quite accepted if you like an almost-defective standard. Especially in the region that we email them, definitely in the Asia-Pacific region or at least Oceania region. It's really easy to use. The the room and shared mailbox functionality that people use, it just all really works well together.
What is most valuable?
The features that are most valuable are: unlimited archiving, the hold and redemption policy functionality.
For how long have I used the solution?
One to three years.
What do I think about the stability of the solution?
There were no issues of stability at all. I have not experienced issues of connectivity or backend issues at all.
What do I think about the scalability of the solution?
This is a highly scalable solution. We implemented it for 160 users. All the space you need is there. You could quickly grow it. All the functionality is there. You've got the power shelf or bulk work that you need to do. There are no issues.
How is customer service and technical support?
Tech support has been great, when necessary. There is a quick response time. The specific issues we were dealing with were to verify an end-case. We did have to go through three or four different people, who gave us different answers. But, we finally got a response from a tech specialist who plainly told us that we could not do what we wanted to do. We found the tech support highly intelligent and knowledgeable.
How was the initial setup?
Initial setup was straightforward.
What was our ROI?
We worked out the investment was a worthwhile investment that saved itself in about eight months. The investment in the project to get it across would pay for itself by reducing the on-premise Exchange costs. There is a definite return on investment by using this solution.
What's my experience with pricing, setup cost, and licensing?
Regarding the pricing and licensing of the solution, it's great. I think it's just awesome. There's no argument about how much value you get on the per user, for user expenditure. It's really great, I don't have any issues with it. I think it's excellent.
What other advice do I have?
Make sure you've got a set user base from all areas of the business because everyone in different departments uses the mail functionality differently. Just make sure you have a really good audit process of what your current environment really is doing before you do your migration.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Manager IT Projects & Systems Integration at a transportation company with 5,001-10,000 employees
Review about Microsoft Exchange Online
Pros and Cons
- "The initial setup was straightforward."
- "When initially setting up, it took a bit of time because we had a lot of PST files with the users, and we had to migrate them batch by batch."
- "Also, I think the mobile app on the forms you can improve a little bit more."
What is our primary use case?
My primary use case for this solution is for clumping emails, and group emails according to the conversation. It helps us sift through 100s of emails.
How has it helped my organization?
This solution helped us reduce a lot of overhead.
What needs improvement?
I would love to have a feature that transfers my notes that I have written on my laptop to my mobile device. Also, I think the mobile app on the forms you can improve a little bit more.
For how long have I used the solution?
More than five years.
What do I think about the stability of the solution?
I have not encountered any issues with stability of the product at all.
What do I think about the scalability of the solution?
We have roughly 500 people using this product in our organization. We have had no problem scaling it with our users.
How was the initial setup?
The initial setup was straightforward. But, it took a bit of time because we had a lot of PST files with the users, and we had to migrate them batch by batch.
Which other solutions did I evaluate?
I am familiar with Google and G Suite. I do not have personal comparisons between the two.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.

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