The law reads something like >statute that prohibited the deposit of unstamped “mailable matter” in a mailbox I assume the outgoing mail, if stamped, is ok. E

The law reads something like >statute that prohibited the deposit of unstamped “mailable matter” in a mailbox I assume the outgoing mail, if stamped, is ok. Edit; UPS may even be able to use it if the item has postage paid, but in that case they would just have USPS deliver it.