Bao qing mail

You're referring to the Bao Qing Mail, also known as the "Bao Qing Mail" or "Pouch of the White Bao".

In Chinese culture, the Bao Qing Mail is a legendary item that is said to have been used by the legendary hero, Bao Qing Tian, to carry his mail and correspondence. According to legend, the pouch was made of a special material that was resistant to fire and water, and it was said to have the power to protect its contents from harm.

In modern times, the term "Bao Qing Mail" has been used to refer to a type of secure and reliable communication method, often used for official or confidential correspondence. It is often used to describe a secure and tamper-proof method of sending sensitive information, such as documents or messages.

In the context of email, the term "Bao Qing Mail" is often used to describe a secure and reliable email service that provides end-to-end encryption and other security features to protect the confidentiality and integrity of the email messages.

Overall, the Bao Qing Mail is a legendary item that has become synonymous with secure and reliable communication, and its name is often used to describe a secure and trustworthy method of sending and receiving information.