postbag
noun (British English)(also mailbag North American English, British English)
- [usually singular]
all the letters, emails, etc. received by a newspaper, a TV station, a website, or an important person at a particular time or about a particular subject （寄给报纸、电视台、网站、要人等的）公众来信 a large strong bag that is used for carrying letters and packages 邮袋