Ever wanted to receive packages when you are at a relatives place ? or didnt want packages to be delivered to your door step.
Or if you are away for say 2 weeks and still wanted that special package in which ever place you were ?
In that case USPS gopost is your solution, and it is Free .

Essentially you can ship your package anywhere in US and pick it from that location.

Registration is free


Home page :'

https://tools.usps.com/go/EPLAction!input

FAQ's
https://tools.usps.com/go/EPLAction!faq.action