fill out a change of address card at the post office, your mail will be forwarded to your new address.
UPS now has UPS My Choice, which is very good, not only can you update an address or reroute a delivery, they offer notifications, where they will send you an email to alert you that they will be delivering a package.
Don't know about affys with the post office, especially if they have to be signed for.
I'm not aware of a way to be alerted or change an address with FedEx,
Wishing you many wins at your new home. :sunny: