We use the solution for emailing.
Solution architect at Cargill
User-friendly, intuitive, and scalable
Pros and Cons
- "All of the features are beneficial, but the scheduling feature is particularly useful."
- "The stability of the solution on Mac products has room for improvement."
What is our primary use case?
What is most valuable?
50 percent of my work is accomplished via email. All of the features are beneficial, but the scheduling feature is particularly useful.
The solution is user-friendly and intuitive.
What needs improvement?
The stability of the solution on Mac products has room for improvement.
For how long have I used the solution?
I have been using the solution for 25 years.
Buyer's Guide
Microsoft Exchange Online
March 2025

Learn what your peers think about Microsoft Exchange Online. Get advice and tips from experienced pros sharing their opinions. Updated: March 2025.
845,040 professionals have used our research since 2012.
What do I think about the stability of the solution?
I give the stability a ten out of ten.
What do I think about the scalability of the solution?
The solution is scalable. We have ten thousand people using the solution in our organization.
How was the initial setup?
The initial setup is straightforward.
What's my experience with pricing, setup cost, and licensing?
Our organization pays for a corporate license to use the solution.
What other advice do I have?
I give the solution a ten out of ten.
Microsoft Exchange Online is simple and intuitive and I recommend the solution.
Which deployment model are you using for this solution?
Public Cloud
If public cloud, private cloud, or hybrid cloud, which cloud provider do you use?
Microsoft Azure
Disclosure: I am a real user, and this review is based on my own experience and opinions.

Office 365 and Exchange Administrator at Vvolve management consultants
A cloud based messaging platform that delivers email, calendar, contacts, and tasks
Pros and Cons
- "One of my favourite features is the Microsoft Calendar, which we use for booking appointments, scheduling calls, and managing resource rooms and devices. The Online Mailbox feature is also crucial because it allows us to communicate effectively within and outside the organization, contributing to our business growth."
- "In terms of areas for improvement, I think Microsoft could enhance security. Right now, there are limited options for security within Exchange Online, and much of it relies on third-party security and compliance tools. I'd like to see more security features directly integrated. One specific area that needs improvement is the configuration of SMTP for third-party applications. It's challenging to manage without an on-premise SMTP server, and this is an issue many organizations face, including ours. If Microsoft could offer better SMTP configuration for third-party applications within Exchange Online, it would greatly benefit us."
What is our primary use case?
In our organization, we use Microsoft Exchange Online to send and receive emails, schedule meetings and appointments, manage calendars, book rooms, and manage resources. It's an essential tool for us. We implemented Exchange Online to support our users by managing licenses and creating new mailboxes, shared mailboxes, distribution groups, M365 groups, and security groups. It also helps us manage calendar permissions and other tasks.
How has it helped my organization?
In my organization, we initially used Microsoft Exchange Online just for sending emails, but now, with the integration of Microsoft Copilot, we've seen significant improvements. Copilot helps analyze emails and provide analytics, making it an essential feature for us. It's been a great addition, and our management finds it very valuable.
What is most valuable?
One of my favourite features is the Microsoft Calendar, which we use for booking appointments, scheduling calls, and managing resource rooms and devices. The Online Mailbox feature is also crucial because it allows us to communicate effectively within and outside the organization, contributing to our business growth.
What needs improvement?
In terms of areas for improvement, I think Microsoft could enhance security. Right now, there are limited options for security within Exchange Online, and much of it relies on third-party security and compliance tools. I'd like to see more security features directly integrated. One specific area that needs improvement is the configuration of SMTP for third-party applications. It's challenging to manage without an on-premise SMTP server, and this is an issue many organizations face, including ours. If Microsoft could offer better SMTP configuration for third-party applications within Exchange Online, it would greatly benefit us.
For how long have I used the solution?
I’ve been working with Microsoft Exchange Online for the past four and half years across different organizations, including SEL Technology and CCS, and now at my current company. I’m a Microsoft Office 365 administrator working at a US-based multinational company. I’m an IT professional and a subject matter expert for Microsoft Exchange Online. As a technical support engineer for level two and level three, I provide customer support for various Outlook-related issues such as delegate access, mailbox queries, permissions, creating new mailboxes, and managing SMBL.
What do I think about the stability of the solution?
In terms of stability, I'd give it a nine because it's very stable compared to other messaging systems.
What do I think about the scalability of the solution?
For scalability, I also rate it a nine since it's highly scalable.
How was the initial setup?
It was easy to implement. Microsoft provides all the necessary documentation; I'veconfigured it myself for my organization without any issues. It's simple enough that even a quick learner can implement it. Setting it up takes about an hour or two, depending on the configuration, but it can be done within a day for a new organization in the cloud.
What's my experience with pricing, setup cost, and licensing?
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.
What other advice do I have?
Overall, I would recommend Microsoft Exchange Online to others because of its easy implementation and the range of features it provides at a reasonable price point. It includes everything needed without requiring third-party vendors, making it highly efficient. However, due to the SMTP configuration issues, I would rate it an eight out of ten overall.
Which deployment model are you using for this solution?
Public Cloud
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Last updated: Sep 25, 2024
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Microsoft Exchange Online
March 2025

Learn what your peers think about Microsoft Exchange Online. Get advice and tips from experienced pros sharing their opinions. Updated: March 2025.
845,040 professionals have used our research since 2012.
Used for emails and provides integration with other services for shared calendars
Pros and Cons
- "The most valuable feature of the solution is its integration with Microsoft Outlook and Microsoft Teams for shared calendars."
- "The solution’s technical support could be improved."
What is our primary use case?
We use Microsoft Exchange Online for emails.
What is most valuable?
The most valuable feature of the solution is its integration with Microsoft Outlook and Microsoft Teams for shared calendars.
What needs improvement?
The solution’s technical support could be improved.
For how long have I used the solution?
I have been using Microsoft Exchange Online for two to three years.
What do I think about the stability of the solution?
We haven't faced any issues with the solution's stability.
I rate Microsoft Exchange Online an eight out of ten for stability.
How are customer service and support?
The solution's technical support is sometimes helpful and sometimes useless. It depends on the agent that is working on your case.
I rate the solution’s technical support a six or seven out of ten.
How would you rate customer service and support?
Neutral
Which solution did I use previously and why did I switch?
I previously worked with the IBM Domino mail system. Compared to the on-premises model of Microsoft Exchange Online, the IBM Domino mail system's maintenance and administration upgrades were less complicated.
How was the initial setup?
It wasn't difficult to migrate the solution from on-premises to the cloud. It took us around one week to migrate from on-premises to the cloud because we don't have that many mailboxes.
What's my experience with pricing, setup cost, and licensing?
We are Microsoft partners. We bought some licenses, and some are within our package or partnership with Microsoft.
What other advice do I have?
Earlier, we had the solution on-premises, and then we migrated to the cloud. The solution helped with the planning and time management within our organization by providing everything that Outlook offers to end users, including email and calendar.
The solution does not provide 100% security, and some emails are still detected as malicious by our other endpoint security solution. Microsoft Exchange Online does not require any maintenance from our side.
Overall, I rate the solution an eight out of ten.
Disclosure: My company has a business relationship with this vendor other than being a customer: partner
Network Security Engineer at Raya Integration
An easy-to -use and stable solution that can be used for emails
Pros and Cons
- "Microsoft Exchange Online is an easy-to -use email solution."
- "Microsoft Exchange Online should have a faster search feature."
What is our primary use case?
I use Microsoft Exchange Online mainly for emails.
What is most valuable?
Microsoft Exchange Online is an easy-to -use email solution.
What needs improvement?
Microsoft Exchange Online should have a faster search feature.
For how long have I used the solution?
I have been using Microsoft Exchange Online for eight years.
What do I think about the stability of the solution?
Microsoft Exchange Online is a very stable solution.
What do I think about the scalability of the solution?
Microsoft Exchange Online is a scalable solution.
How was the initial setup?
The solution’s initial setup is straightforward.
What other advice do I have?
Overall, I rate Microsoft Exchange Online ten out of ten.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Senior Information Technology System Administrator at Sumathi Holdings
Reliable, easy to access, and has good support
Pros and Cons
- "It's pretty reliable. We haven't had any issues with it."
- "The solution is expensive."
What is our primary use case?
We use the Microsoft email suite and we use this solution on a client basis so email can go through it. Everyone is using it currently.
What is most valuable?
We like that it is online and easy to access. We can work for everywhere. You don't have to install anything.
It's pretty reliable. We haven't had any issues with it.
The product is scalable.
Technical support has been very good.
We've witnessed a bit more ROI since switching to the cloud.
What needs improvement?
The solution is expensive.
The stability could always be better.
For how long have I used the solution?
I've been using the solution for three years.
What do I think about the stability of the solution?
I'd rate the stability eight out of ten. We haven't had any issues, however, in previous versions, a few months back, we did have an outage.
What do I think about the scalability of the solution?
It's scalable. I'd rate it ten out of ten for ease of expansion. There are 300 users on it right now. We do not have plans to increase usage.
How are customer service and support?
We've used technical support in the past. They have been very good. We have nothing to complain about.
How was the initial setup?
We don't have to do any setup. We just have to log in and start using it. Since it's cloud-based there is no configuration necessary.
We have three people who are able to deploy and manage the solution.
What was our ROI?
We've seen an ROI. When we were on-premises we had much more trouble. The cloud makes it much better. We're saving a bit more money.
What's my experience with pricing, setup cost, and licensing?
The solution is expensive. For the price, we do get value, however, it is a bit too much money.
We pay for the solution on a yearly basis. There are no extra costs on top of licenses.
What other advice do I have?
I'm always on the latest version since it is a cloud-based solution.
I'd recommend the solution to others if they have the budget.
I would rate the solution nine out of ten.
Which deployment model are you using for this solution?
Public Cloud
Disclosure: I am a real user, and this review is based on my own experience and opinions.
IT Manager at Cerberus IT Solutions
Quick setup, useful online archiving, and highly scalable
Pros and Cons
- "The most valuable feature of Microsoft Exchange Online is if you have people that are geographically distributed from each other is good. For example, if you have people in the United States, Europe, Africa, Asia, and Australia, having an online solution works best because then you can reach the scale of the data centers that are available by Microsoft. Additionally, if you're only going to have two to three people using the solution the cost is a lot less than having an onsite server and licensing. It is highly beneficial in these areas."
- "The support from the vendor is fine. However, it could be faster, and some of the agents could be more knowledgeable, but it is a large solution, there's a lot of information that the agents have to work with. I can't always expect when I get connected to the first-level agent that they will know absolutely everything. Sometimes there's no replacement for pure experience."
What is our primary use case?
Microsoft Exchange Online is used for emails and it does a fantastic job.
The only reason why you would choose an online solution is the company that you're working at is they do not want to have an onsite server. The companies that want something on-site would choose the on-premise version.
What is most valuable?
The most valuable feature of Microsoft Exchange Online is if you have people that are geographically distributed from each other is good. For example, if you have people in the United States, Europe, Africa, Asia, and Australia, having an online solution works best because then you can reach the scale of the data centers that are available by Microsoft. Additionally, if you're only going to have two to three people using the solution the cost is a lot less than having an onsite server and licensing. It is highly beneficial in these areas.
The online archiving option works well. If you have a lot of emails and you want to keep them indefinitely, then you can use the online archive. It's available permanently and you can store quite a bit of email inside it.
For how long have I used the solution?
I have been using Microsoft Exchange Online for approximately four and a half years.
What do I think about the stability of the solution?
The stability of the solution is good. I've only had an issue with it once or twice, but that was due to undersea cable damage.
What do I think about the scalability of the solution?
Microsoft Exchange Online is highly scalable.
We have a lot of users using this solution.
How are customer service and support?
The support from the vendor is fine. However, it could be faster, and some of the agents could be more knowledgeable, but it is a large solution, there's a lot of information that the agents have to work with. I can't always expect when I get connected to the first-level agent that they will know absolutely everything. Sometimes there's no replacement for pure experience.
I rate the support from Microsoft Exchange Online a three out of five.
How would you rate customer service and support?
Neutral
How was the initial setup?
The initial setup of the cloud version is similar to the on-premise version. You can have a straightforward or semi-complex deployment. Cloud deployments do not become as complex as the on-premise version, but they can, depending on how it is used.
The deployment of the solution only takes five minutes. It is very useful when deploying from scratch. As soon as you have the domain up and running it is complete and ready to go.
What's my experience with pricing, setup cost, and licensing?
The license for the solution is cheap, but it could be more affordable in the long term.
What other advice do I have?
We have one level two or level three engineer that does the deployment and maintenance of the solution. The online version does not require a lot of people to run it.
I recommend this solution to others and they will not regret it. They should not use other solutions.
I rate Microsoft Exchange Online a nine out of ten.
Which deployment model are you using for this solution?
Public Cloud
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Project Manager at Dell EMC
Great for collaboration and syncing calendars with good reliability
Pros and Cons
- "The solution has been stable with good performance on offer."
- "The solution could be a bit cheaper."
What is our primary use case?
We use Microsoft Exchange for sending emails and running calendars. With the calendars, we are able to check other people's calendars and be sure of their availability so that they can deploy solutions. That's what we normally use it for.
What is most valuable?
The solution is great for collaboration purposes.
The calendar capabilities are great.
The solution has been stable with good performance on offer.
The product can scale.
What needs improvement?
The solution could be a bit cheaper.
I'd like it to be more voice-activated and to have more AI so that it becomes easier to use. The world is moving toward more AI and machine learning, and likely they will adopt more of it in the future.
For how long have I used the solution?
We just migrated to the solution. We've used it maybe for about a year and a half so far.
What do I think about the stability of the solution?
The solution is very stable and reliable. There are no bugs or glitches. It doesn't crash or freeze.
What do I think about the scalability of the solution?
I've not had any problem with it personally in terms of scaling. Due to the fact that it's connected, it pulls everything down. I'm able to do whatever is needed of me with it without stress.
Everybody is using it now in the company. If it was not scalable, I don't believe over 100,000 staff members could be using it without issues. It has to be scalable.
If we want to increase usage, we simply purchase more licenses.
How are customer service and support?
I've not had any contact with tech support. It's been very stable for me. There has been no need.
How was the initial setup?
I'm not part of the team that does the installation. That said, I know that Exchange should be good in terms of implementation. In the mailing lists that I used to install, the installation was straightforward. If you get your configurations right, it works. It works well without any trouble. This is Mircosoft. I'm sure it's fine to install.
What's my experience with pricing, setup cost, and licensing?
You do need to pay a licensing fee in order to access the solution. There are also enterprise agreements where companies would have to agree to a certain level of volume.
It could be less expensive. If it was, more companies would use it.
What other advice do I have?
I'm an end-user.
I would recommend the solution to others and rate it at a ten out of ten. It's in the Cloud; people don't need to have anything on-site or to worry themselves with problems any longer. Microsoft takes care of the back end while companies can focus on their day-to-day work and be more productive.
Which deployment model are you using for this solution?
Public Cloud
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Principal Cloud Architect at a wholesaler/distributor with 1,001-5,000 employees
Reduces maintenance, has zero downtime and is fairly reliable
Pros and Cons
- "I enjoy not having to maintain the local infrastructure, local servers, local whatever. You use the software and don't have to worry about the details."
- "I don't really like the response time of the web GUI for administration."
What is most valuable?
The experience has been rather good. We've had nothing major happen to us. We've had no major downtimes. We haven't lost mail so far, which is good.
I enjoy not having to maintain the local infrastructure, local servers, local whatever. You use the software and don't have to worry about the details. You're not concerned with administration tasks other than managing users, which, of course, our team does on a daily basis, basically.
The pricing is okay.
The solution is stable.
The product scales well.
The user interface isn't too bad.
What needs improvement?
There were a few short outages where mail delivery was flaky.
I don't really like the response time of the web GUI for administration. All this seems a bit slow and not responsive enough. They should provide a far simpler solution for sending mail from machines as this is not really intuitive.
Due to the restrictions that Azure and Microsoft impose on sending mail, for example, if you have an Azure-deployed server that is sending out mails (for a shop system or something like that) it's not really simple. Also, it is not really scalable to use Office 365 as a relay server.
There's not really a useful backup tool that comes along with Exchange Online. You have lots and lots of storage for each user, yet you have to buy extra backup tools just to back it up with an Exchange on-premise. You could do this just with onboard tools, however, there's no such thing in cloud deployment.
For how long have I used the solution?
We completed the migration from Lotus Notes on-premise to Microsoft Office Online or Exchange Online last year.
What do I think about the stability of the solution?
The stability has been good. We haven't dealt with bugs or glitches. it's pretty reliable.
What do I think about the scalability of the solution?
I expect the product to scale well. That is what we are paying Microsoft quite a bit of money for. They have to address scalability, reliability, and things like that. We have the service-level agreement and it's their business to do it. That's what they get the money for.
We have about 3,500 physical users currently using Exchange. There are 1,500 more that are not interactive (for example, service accounts, group mailboxes, and accounts for machines that send mail and things like that). That makes the total number of users 3,500 persons and about 1,200-1,500 users that are not necessarily people.
How are customer service and support?
I haven't had any direct contact with technical support, however, I have not heard complaints as to their services.
Which solution did I use previously and why did I switch?
We used to have an on-premise deployment of Lotus Notes, however, we discontinued using this and swapped over to Microsoft Exchange Online with the help of an external consultant as there was a lot of mailbox migration to do. That was a quite lengthy process due to the fact that we had several terabytes of mail storage that had to be migrated.
How was the initial setup?
We had a partner help us migrate everything over.
The deployment times depend on a few factors. From the first start to the last migrated mailbox, for us, the deployment took over half a year. That said, actually, it wasn't that long, as we deployed in several waves taking one user group at a time and migrating them over.
Therefore, the real transfer time was much less than the seven months. In total, if you take the net time, it might have only been one month of actual migration. However, we made a point of migrating only on weekends to keep user satisfaction high and disturbance to daily business low.
What about the implementation team?
We had a partner assist us with the process.
What's my experience with pricing, setup cost, and licensing?
Pricing is good. However, it's also not exactly cheap.
It's my understanding that we have a contract that runs for two or three years with an enterprise agreement backing all this up. We do not buy on a yearly basis. That would be unusual for our company to buy for such short term.
What other advice do I have?
Since the project was finished, I'm no longer in an administrative role with Exchange Online. I have passed it on to other colleagues. The administration part is no longer in my hands, for which I'm quite grateful. I don't have to do the daily tasks anymore. My main job is to be the principal cloud architect for the company. I'm, to a lesser extent, concerned with daily administration tasks.
I'd recommend potential new users just go ahead and do it. It reduces the on-site administration chores by quite a bit. It's reliable enough to be used without second thoughts for business if you can handle the cost that comes with it, as Exchange or the whole Office 365 is not exactly cheap, especially when you count in the cost for security-related services that come with Office 365 if you pay for them.
I'd rate the solution at an eight out of ten. It works well, just not perfectly.
Which deployment model are you using for this solution?
Public Cloud
Disclosure: I am a real user, and this review is based on my own experience and opinions.

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Updated: March 2025
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