outbox
US /ˈaʊt.bɑːks/
UK /ˈaʊt.bɑːks/

1.
发件箱, 发送箱
a folder in an email program or a physical tray where outgoing messages or documents are temporarily stored before being sent
:
•
I accidentally sent the email to my outbox instead of directly sending it.
我不小心把邮件发到了发件箱,而不是直接发送。
•
Please check your outbox to see if the message is still there.
请检查你的发件箱,看看邮件是否还在那里。