When I signed up for delivery manager there was somewhere on there that let me give the ok to leave packages at my door without signing.
BTW - I just got confirmation they delivered my phone. :)
I'm pretty sure it just depends on your history with them. If they have delivered to you before and/or you have previously agreed to let them leave packages without signing.
Not only does mine not show as shipped (and nothing from FedEX delivery manager), but the pending charge for the phone that has been showing on my online banking statement is now gone....