Exchange email storage alert to admin

Aran Billen 576

Hi all,

Is it possible to set up a policy or rule to notify admin that a particular email is nearly full ie 80%

Accepted answer

Mike Hu-MSFT 390 Reputation points Microsoft Vendor

2024-04-23T06:53:31.2633333+00:00

Hi,

Please understand that the tag “Microsoft Exchange Online Management” is for general questions related to Exchange Online. For your question about the script which is not supported in our community. But based on my personal experience, you could refer to https://devblogs.microsoft.com/scripting/get-exchange-online-mailbox-size-in-gb/ to find out about the use of ToMB（）.

Hope this helps!
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1 additional answer

Vasil Michev 95,581 Reputation points MVP

2024-04-16T16:03:17.58+00:00

If your tenant has over 5000 licenses, you can address this via priority accounts monitoring, as detailed here: https://learn.microsoft.com/en-us/microsoft-365/enterprise/microsoft-365-exchange-monitoring?view=o365-worldwide

Otherwise, schedule a script/workflow to periodically fetch mailbox usage data via PowerShell or the Graph API reports endpoint. There are plenty examples available online, look them up.
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Aran Billen 576 Reputation points

2024-04-17T09:26:31.95+00:00

So I have found out how to get the stats I need to see the space for the user but then how do I get this emailed to me via powershell?

Get-MailboxStatistics -Identity no-reply@test.co.uk | Select DisplayName,TotalItemSize

Thanks in advance

Aran Billen 576 Reputation points

2024-04-17T09:54:35.0233333+00:00

is something like the below meant to work? However I get this message not sure if its my machine or not. error: Method invocation failed because [Deserialized.Microsoft.Exchange.Data.ByteQuantifiedSize] does not contain a method named 'ToMB'.

# Define the threshold percentage $threshold = 10 # Define the mailbox to monitor $mailbox = "no-reply@test.co.uk" # Define the recipient email for the notification $notificationRecipient = "my-email@test.com" # Connect to Exchange Online $UserCredential = Get-Credential Connect-ExchangeOnline -Credential $UserCredential # Retrieve mailbox statistics $mailboxStats = Get-MailboxStatistics -Identity $mailbox # Calculate the storage usage percentage $storageUsed = ($mailboxStats.TotalItemSize.Value.ToMB() / $mailboxStats.TotalDeletedItemSize.Value.ToMB()) * 100 # Check if the storage used is greater than or equal to the threshold if ($storageUsed -ge $threshold) { # Send the notification email Send-MailMessage -From $mailbox -To $notificationRecipient -Subject "Mailbox Storage Alert" -Body "The mailbox $mailbox has reached $threshold% of its storage allowance." } # Disconnect from Exchange Online Disconnect-ExchangeOnline -Confirm:$false
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