diff --git a/Shared Mailbox Size Report/GetSharedMailboxSizeReport.ps1 b/Shared Mailbox Size Report/GetSharedMailboxSizeReport.ps1
new file mode 100644
index 0000000..2f60a7d
--- /dev/null
+++ b/Shared Mailbox Size Report/GetSharedMailboxSizeReport.ps1	
@@ -0,0 +1,184 @@
+<#
+=============================================================================================
+Name:           Export Shared Mailbox Size Report
+Description:    This script exports Exchange Online shared mailbox size report to CSV
+Version:        1.0
+Website:        o365reports.com
+
+Script Highlights: 
+~~~~~~~~~~~~~~~~~
+1.The script uses modern authentication to connect to Exchange Online.  
+2.The script can be executed with MFA enabled account too.  
+3.Exports report results to CSV. 
+4.You can choose to either “export mailbox size of all the shared mailboxes” or pass an input file to “get usage statistics of specific shared mailboxes” alone. 
+5.Automatically installs the EXO PowerShell module (if not installed already) upon your confirmation. 
+6.The script is scheduler friendly. I.e., Credential can be passed as a parameter instead of saving inside the script. 
+7.The script supports Certificate-based authentication (CBA).
+
+For detailed Script execution: https://o365reports.com/2024/02/06/exchange-online-shared-mailbox-size-report-using-powershell/
+============================================================================================
+#>
+Param
+(
+    [Parameter(Mandatory = $false)]
+    [string]$MBNamesFile,
+    [string]$UserName,
+    [string]$Password,
+    [string]$Organization,
+    [string]$ClientId,
+    [string]$CertificateThumbprint
+)
+
+Function Get_MailboxSize
+{
+ $Stats=Get-MailboxStatistics -Identity $UPN
+ $ItemCount=$Stats.ItemCount
+ $TotalItemSize=$Stats.TotalItemSize
+ $TotalItemSizeinBytes= $TotalItemSize –replace “(.*\()|,| [a-z]*\)”, “”
+ $TotalSize=$stats.TotalItemSize.value -replace "\(.*",""
+ $DeletedItemCount=$Stats.DeletedItemCount
+ $TotalDeletedItemSize=$Stats.TotalDeletedItemSize
+
+ #Export result to csv
+ $Result=@{'Shared Mailbox Name'=$DisplayName;'UPN'=$upn;'Mailbox Type'=$MailboxType;'Primary SMTP Address'=$PrimarySMTPAddress;'Archive Status'=$Archivestatus;'Item Count'=$ItemCount;'Total Size'=$TotalSize;'Total Size (Bytes)'=$TotalItemSizeinBytes;'Deleted Item Count'=$DeletedItemCount;'Deleted Item Size'=$TotalDeletedItemSize;'Issue Warning Quota'=$IssueWarningQuota;'Prohibit Send Quota'=$ProhibitSendQuota;'Prohibit send Receive Quota'=$ProhibitSendReceiveQuota}
+ $Results= New-Object PSObject -Property $Result  
+ $Results | Select-Object 'Shared Mailbox Name','UPN','Mailbox Type','Primary SMTP Address','Item Count','Total Size','Total Size (Bytes)','Archive Status','Deleted Item Count','Deleted Item Size','Issue Warning Quota','Prohibit Send Quota','Prohibit Send Receive Quota' | Export-Csv -Path $ExportCSV -Notype -Append 
+}
+
+Function main()
+{
+ #Check for EXO PowerShell module inatallation
+ $Module = Get-Module ExchangeOnlineManagement -ListAvailable
+ if($Module.count -eq 0) 
+ { 
+  Write-Host Exchange Online PowerShell module is not available  -ForegroundColor yellow  
+  $Confirm= Read-Host Are you sure you want to install module? [Y] Yes [N] No 
+  if($Confirm -match "[yY]") 
+  { 
+   Write-host "Installing Exchange Online PowerShell module"
+   Install-Module ExchangeOnlineManagement -Repository PSGallery -AllowClobber -Force -Scope CurrentUser
+  } 
+  else 
+  { 
+   Write-Host EXO PowerShell module is required to connect Exchange Online.Please install module using Install-Module ExchangeOnlineManagement cmdlet. 
+   Exit
+  }
+ } 
+
+ Write-Host Connecting to Exchange Online...
+ #Storing credential in script for scheduling purpose/ Passing credential as parameter - Authentication using non-MFA account
+ if(($UserName -ne "") -and ($Password -ne ""))
+ {
+  $SecuredPassword = ConvertTo-SecureString -AsPlainText $Password -Force
+  $Credential  = New-Object System.Management.Automation.PSCredential $UserName,$SecuredPassword
+  Connect-ExchangeOnline -Credential $Credential
+ }
+ elseif($Organization -ne "" -and $ClientId -ne "" -and $CertificateThumbprint -ne "")
+ {
+   Connect-ExchangeOnline -AppId $ClientId -CertificateThumbprint $CertificateThumbprint  -Organization $Organization -ShowBanner:$false
+ }
+ else
+ {
+  Connect-ExchangeOnline
+ }
+
+ #Output file declaration 
+ $ExportCSV=".\SharedMailboxSizeReport_$((Get-Date -format yyyy-MMM-dd-ddd` hh-mm` tt).ToString()).csv" 
+
+ $Result=""   
+ $Results=@()  
+ $MBCount=0
+ $PrintedMBCount=0
+ Write-Host Generating shared mailbox size report...
+ 
+ #Check for input file
+ if([string]$MBNamesFile -ne "") 
+ { 
+  #We have an input file, read it into memory 
+  $Mailboxes=@()
+  $Mailboxes=Import-Csv -Header "MBIdentity" $MBNamesFile
+  foreach($item in $Mailboxes)
+  {
+   $MBDetails=Get-Mailbox -Identity $item.MBIdentity
+   $UPN=$MBDetails.UserPrincipalName  
+   $MailboxType=$MBDetails.RecipientTypeDetails
+   $DisplayName=$MBDetails.DisplayName
+   $PrimarySMTPAddress=$MBDetails.PrimarySMTPAddress
+   $IssueWarningQuota=$MBDetails.IssueWarningQuota -replace "\(.*",""
+   $ProhibitSendQuota=$MBDetails.ProhibitSendQuota -replace "\(.*",""
+   $ProhibitSendReceiveQuota=$MBDetails.ProhibitSendReceiveQuota -replace "\(.*",""
+   #Check for archive enabled mailbox
+   if(($MBDetails.ArchiveDatabase -eq $null) -and ($MBDetails.ArchiveDatabaseGuid -eq $MBDetails.ArchiveGuid))
+   {
+    $ArchiveStatus = "Disabled"
+   }
+   else
+   {
+    $ArchiveStatus= "Active"
+   }
+   $MBCount++
+   Write-Progress -Activity "`n     Processed mailbox count: $MBCount "`n"  Currently Processing: $DisplayName"
+   Get_MailboxSize
+   $PrintedMBCount++
+  }
+ }
+
+ #Get all mailboxes from Office 365
+ else
+ {
+  Get-Mailbox -RecipientTypeDetails SharedMailbox -ResultSize Unlimited | foreach {
+   $UPN=$_.UserPrincipalName
+   $Mailboxtype=$_.RecipientTypeDetails
+   $DisplayName=$_.DisplayName
+   $PrimarySMTPAddress=$_.PrimarySMTPAddress
+   $IssueWarningQuota=$_.IssueWarningQuota -replace "\(.*",""
+   $ProhibitSendQuota=$_.ProhibitSendQuota -replace "\(.*",""
+   $ProhibitSendReceiveQuota=$_.ProhibitSendReceiveQuota -replace "\(.*",""
+   $MBCount++
+   Write-Progress -Activity "`n     Processed mailbox count: $MBCount "`n"  Currently Processing: $DisplayName"
+ 
+   #Check for archive enabled mailbox
+   if(($_.ArchiveDatabase -eq $null) -and ($_.ArchiveDatabaseGuid -eq $_.ArchiveGuid))
+   {
+    $ArchiveStatus = "Disabled"
+   }
+   else
+   {
+    $ArchiveStatus= "Active"
+   }
+   Get_MailboxSize
+   $PrintedMBCount++
+  }
+ }
+
+ #Open output file after execution 
+ If($PrintedMBCount -eq 0)
+ {
+  Write-Host No mailbox found
+ }
+ else
+ {
+  Write-Host `nThe output file contains $PrintedMBCount mailboxes.
+  if((Test-Path -Path $ExportCSV) -eq "True") 
+  {
+
+   Write-Host `n The Output file available in: -NoNewline -ForegroundColor Yellow
+   Write-Host $ExportCSV 
+   $Prompt = New-Object -ComObject wscript.shell      
+  $UserInput = $Prompt.popup("Do you want to open output file?",`   
+ 0,"Open Output File",4)   
+  If ($UserInput -eq 6)   
+   {   
+    Invoke-Item "$ExportCSV"   
+   } 
+  }
+ }
+ #Disconnect Exchange Online session
+ Disconnect-ExchangeOnline -Confirm:$false | Out-Null
+ Write-Host `n~~ Script prepared by AdminDroid Community ~~`n -ForegroundColor Green
+ Write-Host "~~ Check out " -NoNewline -ForegroundColor Green; Write-Host "admindroid.com" -ForegroundColor Yellow -NoNewline; Write-Host " to get access to 1800+ Microsoft 365 reports. ~~" -ForegroundColor Green `n`n
+ 
+}
+ . main 
+ 
+