Definitions for "Return Address"
Place where to send the bounce* when an email turns out undeliverable. The return address is in the envelope* of the email. Some people know this as the "From " header*, since it often saved in mailboxes looking like a header line. It really isn't; it's part of the envelope.
An address, usually printed in the top left corner of the outer envelope, detailing the senders location. Currently all USPS bulk mailings require a full and complete return address
the address of the sender of a letter or parcel indicating where it should be returned if it cannot be delivered