Mailbox Size reports for Exchange Server using PowerShell - powershell

Question

I'm using the following code to get a report of our exchange mailboxes sizes and usage
the output of this script shows on CSV file this columns:
DisplayName, FreeSpace, TotalItemSize, alias, IssueWarningQuota, ProhibitsendReceiveQuota ProhibitSendQuota
my questions are:
all these columns except for the FreeSpace shows the size in bytes for example: 2.784 GB (2,988,883,006 bytes)
i want these columns: TotalItemSize, IssueWarningQuota, ProhibitsendReceiveQuota, ProhibitSendQuota to show only the number without GB and the full bytes size like the FreeSpace column
add new column FreeSpace % that will calculate the free space for the mailbox.
Thanks !
# Load Exchange Management Shell in PowerShell ISE
Add-PSSnapin Microsoft.Exchange.Management.PowerShell.SnapIn
# Delete csv file on "C:\script"
Get-Mailbox -ResultSize Unlimited -RecipientTypeDetails SharedMailbox | Get-MailboxStatistics |
Select DisplayName, #{n="Total Size (MB)";e={[math]::Round(($_.TotalItemSize.ToString().Split("(")[1].Split(" ")[0].Replace(",","")/1MB),2)}}, StorageLimitStatus
$Result=#()
#Get all user mailboxes
$mailboxes = Get-Mailbox -ResultSize Unlimited -RecipientTypeDetails UserMailbox
#Get all shared mailboxes
#$mailboxes = Get-Mailbox -ResultSize Unlimited -RecipientTypeDetails SharedMailbox
$totalmbx = $mailboxes.Count
$i = 0
$mailboxes | ForEach-Object {
$mbx = $_
#Get mailbox statistics
$mbs = Get-MailboxStatistics -Identity $mbx.Identity
$i++
Write-Progress -activity "Processing $mbx" -status "$i out of $totalmbx completed"
if ($mbs.TotalItemSize -ne $null){
$size = [math]::Round(($mbs.TotalItemSize.ToString().Split('(')[1].Split(' ')[0].Replace(',','')/1MB),2)
}else{
$size = 0 }
$Result += New-Object -TypeName PSObject -Property $([ordered]#{
Name = $mbx.DisplayName
PrimarySmtpAddress = $mbx.PrimarySmtpAddress
AliasSmtpAddresses = ($mbx.EmailAddresses | Where-Object {$_ -clike 'smtp:*'} | ForEach-Object {$_ -replace 'smtp:',''}) -join ';'
TotalSizeInMB = $size
SizeWarningQuota=$mbx.IssueWarningQuota
StorageSizeLimit = $mbx.ProhibitSendQuota
StorageLimitStatus = $mbs.ProhibitSendQuota
})
}
$Result | Export-CSV "C:\Temp\MailboxSizeReport.csv" -NoTypeInformation -Encoding UTF8
$results = ForEach($mb in $mailboxes){
$stats=get-mailboxstatistics $mb
if ($mb.ProhibitSendQuota -eq 'Unlimited') {
$freespace = 'Unlimited'
}
else {
$totalBytes = [double]($stats.totalitemsize -replace '.*?\((.*?) bytes.*','$1')
$prohibitBytes = [double]($mb.ProhibitSendQuota -replace '.*?\((.*?) bytes.*','$1')
$freespace = [Math]::Round(($prohibitBytes - $totalbytes)/1GB,2)
}
$props=#{
alias=$mb.alias
DisplayName=$mb.displayname
#StorageLimitStatus=$stats.StorageLimitStatus
TotalItemSize=$stats.totalitemsize
#DatabaseName=$stats.databasename
ProhibitSendQuota=$mb.ProhibitSendQuota
ProhibitsendReceiveQuota=$mb.ProhibitsendReceiveQuota
IssueWarningQuota=$mb.IssueWarningQuota
FreeSpace=$freespace
}
[pscustomobject]$props
}
$results | Sort-Object TotalItemSize -descending | export-csv c:\script\report.csv -NoTypeInformation -Encoding UTF8