We have found that pretty simple. We get all our mail delivered to a local "my office" that's the name of the company in our hometown. We pay annually for a mailbox and give them rights to sign for anything needing a sig. If we're in town we just go pickup our mail, if going to be on the road we let them know. They email use when the box is full. We then have them ship the mail "soft side package" to whatever RV Park we happen to be staying at. Usually runs about 15.00 or less shipping. It works out very well for our mail and my mail order meds. Have done it for years. Side notes on meds. If you typically get one or two med filled at Walmart, the refill can be transferred to the Wal Mart at the location you happen to be in and then you go there and pick it up.