0 an envelope with a stamp and your name and address on it that you send inside another envelope to an organization when you want a reply
1 → sae :
A stamped addressed envelope was provided for postal return.
Participants were instructed to complete and return their questionnaires using a stamped addressed envelope enclosed for their use.
A stamped addressed envelope was provided for the reply slips.
A stamped addressed envelope was included for ease of return.
A stamped addressed envelope was enclosed.
A stamped addressed envelope is enclosed for the favour of your reply.
People should wait for the enumerator to arrive and, failing that, for the stamped addressed envelope to arrive.
My constituent has written to me again today, sending a stamped addressed envelope.