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Taking the solution from that thread, and editing, it would seem to be:

$(Foreach ($mailbox in Get-Recipient -ResultSize Unlimited -OrganizationalUnit -RecipientType UserMailbox){
$Stat = $mailbox | Get-MailboxStatistics | Select TotalItemSize
	New-Object PSObject -Property @{
	DisplayName = $mailbox.DisplayName
	TotalItemSize = $Stat.TotalItemSize
}) | Select DisplayName,TotalItemSize | 
Export-CSV C:\MailboxReport.csv -NTI

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Is that what you mean?


open powershell:

Connect to Exchange online
$cred = Get-Credential 
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri -Credential $cred -Authentication Basic -AllowRedirection 
Import-PSSession $Session

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Convert mailbox sizes to MB and export to CSV
get-mailbox -ResultSize Unlimited | 
Get-MailboxStatistics | 
select displayname,@{n="Total Size (MB)";e={[math]::Round( ` 
($_.totalitemsize.ToString().Split("(")[1].Split(" ")[0].Replace(",","")/1MB),1)}} | 
sort "Total Size (MB)" -Descending | 
export-csv "C:\Users\Username\Desktop\MailboxSizeReport.csv" -NoTypeInformation

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Dfke's is better :-)
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Todd NelsonSystems EngineerCommented:
Use the following command to get mailbox name and size in MB in a one line command.  No need to run the sort (as shown above) because the output is a CSV format that can be sorted in Excel.  If you want additional columns on mailbox info, add the parameters you want listed after "}}".

Get-Mailbox -ResultSize Unlimited -OrganizationalUnit "OU" | Get-MailboxStatistics | Select-Object DisplayName,@{label="TotalItemSize (MB)";expression={$_.TotalItemSize.Value.ToMB()}} | Export-Csv C:\MailboxSizes.csv -NoType

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Depending on your OU structure, the format may need to look something like this "domain.local/OU/Sub-OU" for the OU you plan to target.


That's my solution in a oneliner basically. Oneliners are nice but can be a pain when you need to figure out why it won't execute correctly.

Either way things should help you out.

I agree - I think the points should go 750 to DFKE's comment.
I think that the original points split that Todd suggested was right, but the 750 should go to DFKE rather than Todd:

DFKE = 750
Todd = 125
Alan = 125

Or alternatively, 1000 to DFKE.

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