To be honest, I think the HIG standard would be to just have the rightmost action icon, that has options for "Delete", "Archive", "Move to Folder", etc. So it

To be honest, I think the HIG standard would be to just have the rightmost action icon, that has options for "Delete", "Archive", "Move to Folder", etc. So it wouldn't really be nay faster. Also, the App Store review certainly doesn't enforce the HIG.