Meaning of the word "in the prepaid envelope" in English

What does "in the prepaid envelope" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

in the prepaid envelope

US /ɪn ðə priːˈpeɪd ˈenvəloʊp/
UK /ɪn ðə priːˈpeɪd ˈenvələʊp/
"in the prepaid envelope" picture

Phrase

placed inside an envelope that has already had the postage paid for

Example:
Please return the completed form in the prepaid envelope provided.
You don't need a stamp if you send it in the prepaid envelope.