Storage Warning Email Goes to the Wrong User: OneDrive for Business Fix

Your OneDrive for Business storage warning email may arrive in the wrong user’s inbox. This happens when a shared mailbox or distribution group is set as the primary email address for the OneDrive site. The warning message, sent by Microsoft 365 when storage nears the limit, goes to that group instead of the actual site owner. This article explains why the email is misdirected and how to change the notification recipient to the correct user.

The root cause is a mismatch between the OneDrive site’s owner and the email address configured for storage notifications. Microsoft 365 sends storage warnings to the email address listed in the OneDrive site properties, not necessarily the user who owns the site. If a shared mailbox or group was added as a site owner or delegate, that address receives the alerts. You must update the site’s notification settings to point to the correct user.

Below you will find the steps to identify the current notification recipient and reassign the storage warning email to the right person. You will also learn how to prevent this issue from recurring on other OneDrive sites.

Why Storage Warning Emails Go to the Wrong User

Microsoft 365 sends storage warning emails to the email address stored in the OneDrive site’s StorageWarningEmail property. This property is set automatically when the site is created. It copies the email address of the site’s primary owner. If the primary owner is a shared mailbox or a distribution group, the warning goes there.

This misconfiguration often occurs in three scenarios:

• An administrator assigned a shared mailbox as the site owner during OneDrive provisioning.
• A user added a distribution group as a site owner to share management responsibilities.
• A migration tool copied the wrong email address from the source system.

The storage warning email is separate from the OneDrive quota notification that appears in the Microsoft 365 admin center. The email is sent directly from the SharePoint Online service and uses the StorageWarningEmail field. Changing the site owner does not automatically update this field. You must set it explicitly.

Steps to Change the Storage Warning Email Recipient

You can fix this issue using either the SharePoint Online Management Shell or the OneDrive admin center. Use the PowerShell method for a single user or for bulk changes. Use the admin center if you prefer a graphical interface and only need to change one site.

Method 1: Use SharePoint Online Management Shell

1. Install or connect to SharePoint Online Management Shell
   Open Windows PowerShell as an administrator. Run Install-Module -Name Microsoft.Online.SharePoint.PowerShell if you have not installed the module. Then run Connect-SPOService -Url https://[tenant]-admin.sharepoint.com and sign in with a SharePoint admin account.
2. Identify the OneDrive site URL
   The OneDrive site URL follows the pattern https://[tenant]-my.sharepoint.com/personal/[user]_[domain]_com. You can find this URL in the Microsoft 365 admin center under Users > Active Users > select the user > OneDrive tab.
3. Check the current storage warning email
   Run Get-SPOSite -Identity "[OneDrive site URL]" | Select StorageWarningEmail. This command displays the email address currently receiving warnings.
4. Set the correct email address
   Run Set-SPOSite -Identity "[OneDrive site URL]" -StorageWarningEmail "user@domain.com". Replace user@domain.com with the email address of the user who should receive the warnings. The address must be a valid user mailbox in your tenant.
5. Verify the change
   Run the Get-SPOSite command again to confirm the StorageWarningEmail field now shows the correct address.

Method 2: Use the OneDrive Admin Center

1. Sign in to the Microsoft 365 admin center
   Go to https://admin.microsoft.com and sign in with a SharePoint or Global admin account.
2. Open the OneDrive admin center
   In the left navigation, select Admin centers > OneDrive. Alternatively, go directly to https://admin.onedrive.com.
3. Select the user’s OneDrive
   Under Users, find the user whose OneDrive site needs the update. Click the user’s name to open the details panel.
4. Edit the storage notification settings
   In the details panel, scroll to Storage limit and notifications. Click Edit. In the Send storage warning email to field, enter the correct email address. Click Save.

If the Storage Warning Email Still Goes to the Wrong User

The email address I set is correct, but warnings still go to the old address

The change may take up to 24 hours to propagate across Microsoft 365. Wait one day and then check if the next warning email goes to the correct user. If the problem persists, verify that you are editing the correct OneDrive site. A user may have multiple OneDrive sites if they were rehired or migrated.

I do not have SharePoint admin rights

Only SharePoint administrators, Global admins, or users with the SharePoint Administrator role can change the storage warning email. If you are a standard user, contact your IT department. Provide them with the exact OneDrive site URL and the correct email address.

Multiple users share the same OneDrive site

OneDrive for Business is designed for a single user. If multiple users need access to the same storage, use a shared mailbox or a SharePoint team site. Storage warning emails for a shared mailbox go to the mailbox itself. Assign a user as the owner of the shared mailbox to receive the warnings.

OneDrive Storage Warning Email Settings: Comparison

Item	PowerShell (Set-SPOSite)	OneDrive Admin Center
Access method	SharePoint Online Management Shell	Graphical web interface
Required role	SharePoint admin or Global admin	SharePoint admin or Global admin
Best for	Bulk changes across many OneDrive sites	Single-site changes
Change takes effect	Immediately (propagation up to 24 hours)	Immediately (propagation up to 24 hours)
Can set any email address	Yes, any valid user mailbox	Yes, any valid user mailbox
Error handling	Returns error if address is invalid	Validates address on save

Now you can redirect OneDrive storage warning emails to the correct user. Start by checking the current StorageWarningEmail property using PowerShell or the admin center. Then update it to the intended recipient. To prevent future misdirection, ensure that the primary owner of each OneDrive site is a user mailbox, not a group or shared mailbox. Use the Set-SPOSite -StorageWarningEmail command as part of your onboarding process for new employees.