return mail
noun/rɪˌtɜːn ˈmeɪl/
/rɪˌtɜːrn ˈmeɪl/
[uncountable] (North American English)- mail that is sent as a reply or response to something
回邮：以回复或回应的方式发送的邮件 - This is where the return mail is received and read.
这是接收和阅读回信的地方。 - by return mail Please reply to this letter by return mail (= as soon as possible).
请通过回信回复这封信（=尽快）。
- This is where the return mail is received and read.