The boxes that are grouped together, like in commercial areas, condos and newer single family developments, have a large door on the back. The mailman has a key and opens the whole thing, then stuffs the mail in from back to front. Often they will have an extra box just for outgoing mail.
Most individual mailboxes that lock do not allow access for the mailman, he only has a slot to insert mail. You would have to take the outgoing to a mailbox or post office. One type called "smart lock" allows it to be opened one time after locking, so the mailman can get in. That prevents theft of your incoming mail, but makes leaving outgoing mail vulnerable to theft.
Mail carriers will not carry a key and open locked boxes.
There are different passcodes for each locked box, you need to give your e-mail address so you can get what's inside.
The advantages of a p o box is safety. Mail stays safe behind a locked door until it is opened. Where as a regular mailbox can be opened by anyone who chooses to do so.
If your PO Box has been locked, it is best to contact the post office where the box is located for assistance. They can provide you with information on how to access your mail or what steps you need to take to resolve the issue. Make sure to have proper identification and documentation when contacting the post office.
It belongs to the person to whom it is addressed.
Without a key, you would have to pick it or call a locksmith.
They can either have your mail sent to a locked box with 24/7 access or they can forward it to the address of your preference.
You will need to contact the sender with your new address.
You mark them "addressee unknown" and "return to sender", then either put them back in your mail box for pick up or drop them in any mail box.
go to the mail box and talk to linus
You will need to put it in the appropriate size box and get a delivery service to pick it up and deliver it. Such as UPS or Royal Mail.
stick it back in your mail box your mail man will giv it to the right person or deliver it your self if its down the street
Most companies will not ship to post office boxes. You can buy a box at a UPS store and have mail delivered there. You can have mail held at your post office if you have a problem with mail deliveries.