I've used it for several months now. It is useful... sometimes. You don't get images of everything just the letters etc that are sorted individually. The "bulk presort" crap still shows up but you don't see it in your account. The images delete after a week so you don't have to clean up the account.
It's helpful if you're expecting something important like a check so you know to go to the box early. It also tracks packages so you can know with a fair degree of certainty that a package is picked up at the senders end or is out for delivery to you.
It's not infallible of course - it IS the post office after all - but in all a helpful service.
