$objOutlook = New-Object -Com Outlook.Application
$colItems = $objOutlook.Session.GetDefaultFolder('OlFolderDeletedItems').Items
$olddate = (Get-Date).AddMonths(-2).ToShortDateString()
0..10| %{
$filtered = $colItems.Restrict("[ReceivedTime] <= '$olddate'")
$filtered |
% { $_.Delete() }
}