[string]$DllPath = "C:\Program Files\Microsoft\Exchange\Web Services\2.2\Microsoft.Exchange.WebServices.dll"
[string]$Mailbox = "groupmail@example.com"
[string]$Password = "CS%Outlook2020"
[string]$Domain = "schulenburg"
[string]$EWSURL = "https://outlook.office365.com/EWS/Exchange.asmx"
[string]$DownloadPath = "C:\Temp\Attachments"
[string]$Folder = "Inbox"
Import-Module -Name $DllPath
$ExchangeService = New-Object Microsoft.Exchange.WebServices.Data.ExchangeService([Microsoft.Exchange.WebServices.Data.ExchangeVersion]::Exchange2007_SP1)
$ExchangeService.Credentials = New-Object Microsoft.Exchange.WebServices.Data.WebCredentials($Mailbox,$Password,$Domain)
$ExchangeService.Url = $EwsURL
$offset = 0
Do {
   $ItemView = New-Object Microsoft.Exchange.WebServices.Data.ItemView(1000, $offset)
   $ItemView.PropertySet = New-Object Microsoft.Exchange.WebServices.Data.PropertySet([Microsoft.Exchange.WebServices.Data.BasePropertySet]::FirstClassProperties)
   $Items = $ExchangeService.FindItems([Microsoft.Exchange.WebServices.Data.WellKnownFolderName]:: $Folder,$ItemView)
  $Items
   foreach ($Item in $Items)
   {
    If ($Item.HasAttachments -eq $true)
    {
     Write-Host "Subject: $($Item.Subject)" -ForegroundColor cyan
    $PropertySet = New-Object Microsoft.Exchange.WebServices.Data.PropertySet([Microsoft.Exchange. WebServices.Data.ItemSchema]::Attachments)
     $Message = [Microsoft.Exchange.WebServices.Data.EmailMessage]::Bind($ExchangeService, $Item.Id,$PropertySet)
     Foreach ($Attachment in $Message.Attachments)
     {
       $AttachmentName = $Attachment.Name
       If ($AttachmentName -match ".pdf")
       {
        $AttachmentName
        $Attachment.Load("$DownloadPath\$AttachmentName")
       }
     }
   }
}
    $offset = $offset + 1000
 } while($Items.MoreAvailable)