$mailbox = Read-Host "Enter mailbox identity (email), for example david.witten@euroaccident.com"

if ([string]::IsNullOrWhiteSpace($mailbox)) {
    Write-Host "No mailbox entered. Exiting."
    exit
}

do {
    $selected = Get-RecoverableItems -Identity $mailbox -FilterItemType IPM.Note |
        Sort-Object LastModifiedTime -Descending |
        Select-Object LastModifiedTime, Subject, SourceFolder, PolicyTag, EntryID |
        Out-GridView -Title "Select mails to restore for $mailbox" -PassThru

    if (-not $selected) {
        Write-Host "No mails selected. Exiting."
        break
    }

    $selected | Format-Table LastModifiedTime, Subject, SourceFolder -AutoSize

    $ok = Read-Host "Type YES to restore these mails to $mailbox"

    if ($ok -eq "YES") {
        foreach ($item in $selected) {
            Restore-RecoverableItems -Identity $mailbox -EntryID $item.EntryID
        }

        Write-Host "Restore completed. Reopening selection window..."
    }
    else {
        Write-Host "Restore cancelled. Reopening selection window..."
    }

} while ($true)