Microsoft 365 Tutorials

How To Connect to Microsoft 365 Exchange Services With PowerShell

Learn how to connect to Microsoft 365 Exchange Services with PowerShell, including step-by-step instructions, essential commands, and expert insights. Get mailbox permissions, make security changes, and streamline your administrative tasks efficiently.


In the world of Microsoft 365 administration, PowerShell is a powerful tool that can significantly enhance your ability to manage Exchange Services. Whether you need to configure mailbox permissions, add users to groups, share mailboxes, or grant various permissions, PowerShell can simplify these tasks. In this comprehensive guide, we will walk you through the process of connecting to Microsoft 365 Exchange Services with PowerShell and demonstrate how to perform various administrative actions effectively.


How To Connect to Microsoft 365 Exchange Services With PowerShell

Installing ExchangeOnlineManagement

To begin your journey with PowerShell and Microsoft 365 Exchange Services, you need to install the ExchangeOnlineManagement module. This module provides the necessary cmdlets for managing Exchange Online. Follow these steps:

  1. Open Windows PowerShell with administrative privileges.
  2. Run the following command to install the module:
Install-Module -Name ExchangeOnlineManagement
  1. If prompted to install the NuGet provider, select ‘Yes’ and proceed.

Importing the Module

Now that you have installed the ExchangeOnlineManagement module, the next step is to import it into your PowerShell session. This allows you to access the Exchange cmdlets. Follow these instructions:

  1. Open PowerShell (if not already open).
  2. Run the following command to import the module:
Import-Module ExchangeOnlineManagement
  1. If you encounter a warning about running scripts, you may need to adjust your execution policy. You can do this with the following command:
Set-ExecutionPolicy RemoteSigned

Connecting to Exchange Online

With the module imported, it’s time to connect to Microsoft 365 Exchange Online. This step establishes a secure connection to your Exchange Online environment, allowing you to execute administrative tasks. Follow these steps:

  1. Run the following command to initiate the connection:
Connect-ExchangeOnline -UserPrincipalName <YourAdminUPN> -ShowProgress $true

Replace <YourAdminUPN> with your administrator’s User Principal Name.

  1. You will be prompted to enter your password. Once you provide your credentials, PowerShell will establish the connection.

Disconnect from Exchange Online:

When you’re done making changes, it’s a good practice to disconnect from Exchange Online to terminate the session:

Disconnect-ExchangeOnline -Confirm:$false

This command will disconnect the PowerShell session without asking for confirmation.

View Email Settings for a Specific Mailbox

To view email settings for a specific mailbox in Microsoft Exchange Online (Office 365) using PowerShell, you can use the Get-Mailbox cmdlet. Here’s how to do it:

  1. Connect to Exchange Online: If you haven’t already connected to Exchange Online using PowerShell, follow the steps mentioned in the previous answer to connect.
  2. View Email Settings for a Specific Mailbox: To view email settings for a specific mailbox, you can use the Get-Mailbox cmdlet and specify the mailbox identity. For example:
   Get-Mailbox -Identity <UserEmail> | Format-List *

Replace <UserEmail> with the email address of the mailbox you want to view the settings for.

The Format-List * command is used to display all available properties of the mailbox. You can also specify individual properties if you’re interested in specific settings.

  1. Review the Output: The output will display various properties and settings for the specified mailbox, including details like quota limits, email forwarding settings, and more. You can scroll through the output to find the specific settings you’re interested in.

Here’s an example of what the output might look like:

Name                  : John Doe
PrimarySmtpAddress    : [email protected]
RecipientTypeDetails  : UserMailbox
ProhibitSendQuota     : 2.49 GB (2,673,847,552 bytes)
ProhibitSendReceiveQuota : 2.5 GB (2,684,354,560 bytes)
IssueWarningQuota     : 2.45 GB (2,629,700,608 bytes)

# Additional settings will be displayed here

You can extract and analyze the specific email settings you need from this output.

Remember to have the necessary permissions to view mailbox settings, and exercise caution when working with sensitive information.

Getting Mailbox Permissions and Making Security Changes

Adding Users to Groups

One common administrative task is adding users to security groups or distribution lists. PowerShell simplifies this process significantly. Use the following command template:

Add-DistributionGroupMember -Identity "GroupName" -Member "UserEmail"

Replace "GroupName" with the name of the group and "UserEmail" with the email address of the user you want to add.

Sharing Mailbox with Others

Sharing mailboxes in Microsoft 365 can be done effortlessly using PowerShell. Here’s how you can share a mailbox with another user:

Add-MailboxPermission -Identity "MailboxName" -User "UserEmail" -AccessRights FullAccess

Replace "MailboxName" with the name of the mailbox and "UserEmail" with the email address of the user you want to share it with.

Providing Different Permissions and Calendars

Managing permissions and calendars for multiple users can be time-consuming, but PowerShell streamlines this process. For example, you can grant a user access to another user’s calendar with this command:

Add-MailboxFolderPermission -Identity "MailboxName:\Calendar" -User "UserEmail" -AccessRights Editor

This command grants the user "UserEmail" Editor access to the calendar of "MailboxName".

Sending Email on Behalf of Others (Send As)

To send an email on behalf of another user in Microsoft 365, you can use the “Send As” permission. This allows you to send emails as if you were that user. Here’s how to grant “Send As” permission:

Add-RecipientPermission -Identity "MailboxName" -Trustee "UserEmail" -AccessRights SendAs

Replace "MailboxName" with the name of the mailbox you want to send emails from and "UserEmail" with the email address of the user who should have “Send As” permissions.

This additional command enables you to manage email permissions comprehensively, ensuring that your organization’s communication remains efficient and secure.


How do I find my User Principal Name (UPN)?

To find your UPN, follow these steps:

  1. Log in to your Microsoft 365 admin center.
  2. Navigate to ‘Users’ and select the user for whom you want to find the UPN.
  3. In the user details, locate the ‘User name’ field; this is your UPN.

Is it possible to automate these tasks with PowerShell scripts?

Yes, you can automate various administrative tasks using PowerShell scripts. These scripts can save you time and ensure consistency in your operations.

Can I revoke permissions with PowerShell?

Absolutely. You can use PowerShell to remove users from groups, revoke permissions, and maintain the security of your Microsoft 365 environment.

Are there any risks associated with using PowerShell for administration?

While PowerShell is a powerful tool, it should be used with caution. Always follow best practices, and limit access to administrative accounts to minimize security risks.

Can I use PowerShell on a Mac or Linux machine?

Yes, you can run PowerShell on Mac and Linux machines. Microsoft provides cross-platform versions of PowerShell that are compatible with these operating systems.

Where can I find more information and resources on PowerShell for Microsoft 365?

For additional information and resources, visit the official Microsoft documentation and community forums. These sources can provide valuable insights and solutions to specific challenges.


Connecting to Microsoft 365 Exchange Services with PowerShell empowers administrators to efficiently manage various aspects of their Exchange Online environment. Whether you need to install modules, import cmdlets, or perform specific tasks like managing mailbox permissions, PowerShell offers a streamlined solution. By following the steps outlined in this guide and leveraging the power of PowerShell, you can enhance your productivity and maintain a secure and well-managed Microsoft 365 environment.

I hope this article was helpful!  You can find more here: Microsoft 365 Articles

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