Does arrival at unit mean the book has been delivered?

I don't think so but I can't say for sure

I think it means it arrived at the last post office on its trip (or something like that).

It will say delivered when it is delivered.

Ange is correct. It means it's at your local PO waiting to be delivered to you ;)

Arrival at unit means it has arrived at that zip code.  It might not be the delivery zip it just means it got to that one.  If it is your zip code that means it should be delivered to you that day or the next depending on what time it arrived.  (it could be a late truck that missed the carriers)

"Attempted" means a notice was left and "delivered" means delivered.

Hope this helps!

P Randall

I checked a DC from a game this morning and it said "arrival at unit at 2:33am with my town and zip code" ~ when I checked later in the day it said "delivered at 2:36pm". The book was in my mailbox when I got home at 5pm.

A book I sent says Arrival at Unit at 7:59 AM on 10/18/2007  and it hasn't changed since then. Hmmm.

 I've never even heard that term before.

Here's DC from a book I mailed the other day. It should be delivered later today. I'll update my post w/ the info after it's delivered to show  the difference between "arrival at unit" and "delivered"

Label/Receipt Number: 9102 1655 6135 3000 1914 93 Status: Arrival at Unit Your item arrived at 3:11 AM on October 25, 2007 in , PA 19380. Information, if available, is updated every evening. Please check again later.

ETA - here's the info I get after the book was mark received

Label/Receipt Number: 9102 1655 6135 3000 1914 93 Status: Delivered Your item was delivered at 11:51 AM on October 25, 2007 in,  PA 19382.

24girl, check with the addressee, the delivery scan may have been missed.  

They mystery was solved. It had been delivered but her mail was on hold at the PO since she was on vacation. She marked it received today.