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Microsoft Exchange Online pros and cons

Vendor: Microsoft
4.3 out of 5
Badge Leader

Pros & Cons summary

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Prominent pros & cons

PROS

Microsoft Exchange Online offers reliable and high-performance email management capabilities with very little downtime.
It is highly scalable, supporting large user bases across multiple regions without significant cost increases compared to onsite servers.
The cloud environment provides extensive storage, including massive mailbox capacities, which would be costly to maintain internally.
Exchange Online integrates seamlessly with Microsoft Outlook and Microsoft Teams, enhancing collaboration through shared calendars and document sharing.
Data protection and security features, including spam filtering and data loss prevention, strengthen Microsoft's ecosystem and offer peace of mind.

CONS

Microsoft Exchange Online needs better integration with other platforms and software.
There are concerns about cloud security and the limited options for direct security features.
The process of user provisioning and data migration requires improvements.
Pricing is a significant concern, as it is considered high and could be more competitive.
SMTP configuration for third-party applications could be enhanced, especially without an on-premise SMTP server.
 

Microsoft Exchange Online Pros review quotes

it_user6621 - PeerSpot reviewer
Consultant with 501-1,000 employees
May 22, 2013
Intuitive in how to use.
it_user216687 - PeerSpot reviewer
Microsoft System Engineer at Summit Technology Solution
Aug 4, 2015
Office 365 is one of the strongest solutions that I've seen.
it_user265281 - PeerSpot reviewer
Network Manager / Senior Network Engineer at Warnock, Tanner & Associates
Apr 25, 2018
The uptime and stability is far better than any on-prem or hosted solution I have used in the past.
Learn what your peers think about Microsoft Exchange Online. Get advice and tips from experienced pros sharing their opinions. Updated: March 2026.
884,933 professionals have used our research since 2012.
it_user746322 - PeerSpot reviewer
Assistant Manager IT at ACP BILLING SERVICES PVT LTD
Oct 28, 2018
It helps us manage the email focus from our side.
PS
Solutions Architect at a comms service provider with 1,001-5,000 employees
Oct 28, 2018
The reliability factor is high.
RR
Tech Lead at a tech services company with 1,001-5,000 employees
Oct 28, 2018
It is a reasonable solution.
RG
Senior Technology Support Analyst at a tech vendor with 5,001-10,000 employees
Oct 28, 2018
The overall usage was all good.
RC
Manager IT Projects & Systems Integration at a transportation company with 5,001-10,000 employees
Nov 12, 2018
The initial setup was straightforward.
SD
Director with 11-50 employees
Nov 18, 2018
From the security point of view, you can specify the IP range from the area your system should be connected, and you can have the authentication based on the user certificates of your Active Directory, which improves the security, as well, and there is a flawless integration.
it_user507216 - PeerSpot reviewer
Infrastructure Architect at a tech services company with 5,001-10,000 employees
Nov 18, 2018
Tech support has been great, when necessary.
 

Microsoft Exchange Online Cons review quotes

it_user6621 - PeerSpot reviewer
Consultant with 501-1,000 employees
May 22, 2013
Encourages endless inefficient communications. Do not recommend it for companies that are trying to create efficient decision making processes and agile movement.
it_user216687 - PeerSpot reviewer
Microsoft System Engineer at Summit Technology Solution
Aug 4, 2015
Storage capacity updates.
it_user265281 - PeerSpot reviewer
Network Manager / Senior Network Engineer at Warnock, Tanner & Associates
Apr 25, 2018
Microsoft does not provide an automated way to migrate Public Folders.
Learn what your peers think about Microsoft Exchange Online. Get advice and tips from experienced pros sharing their opinions. Updated: March 2026.
884,933 professionals have used our research since 2012.
it_user746322 - PeerSpot reviewer
Assistant Manager IT at ACP BILLING SERVICES PVT LTD
Oct 28, 2018
In the past, we had issues with DB in mailboxes.
PS
Solutions Architect at a comms service provider with 1,001-5,000 employees
Oct 28, 2018
It should integrate better with social media formats.
RR
Tech Lead at a tech services company with 1,001-5,000 employees
Oct 28, 2018
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.
RG
Senior Technology Support Analyst at a tech vendor with 5,001-10,000 employees
Oct 28, 2018
In terms of machine controls, it was very confusing, and some of the administrative parts will be done from the control, but in online writing mostly we can handle everything.
RC
Manager IT Projects & Systems Integration at a transportation company with 5,001-10,000 employees
Nov 12, 2018
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.
SD
Director with 11-50 employees
Nov 18, 2018
I think there should be an incorporation of DLP on the business premium version of Exchange, as well.
it_user507216 - PeerSpot reviewer
Infrastructure Architect at a tech services company with 5,001-10,000 employees
Nov 18, 2018
Migration can be an issue if you do not have a good audit process.