sae
🇺🇸
/ˌes eɪ ˈiː/
🇬🇧
/ˌes eɪ ˈiː/
A self-addressed envelope is an envelope where you've written your name and address. You usually put a stamp on it, so someone else can use it to send something back to you.
Please include an SAE with your entry so we can send you the prize.