Anonymous mail refers to a novel and unique print advertising business that uses China Post Special Delivery Advertisement and other postal advertising media to deliver commercial information through the postal network. It delivers printed letters without envelopes with the newspaper or directly puts them into the mailbox to provide product information and consumption information such as clothing, catering, entertainment, home, real estate, tourism, etc. to the advertising target consumer groups, with strong pertinence and more direct effect.

1. Zhejiang Post Company

Zhejiang Post Company was established on September 6th, 1999, and its business scope includes licensed business items: postal basic business, postal value-added business, postal financial business, postal subsidiary business, transportation related to postal business (specific types and scope shall be handled according to the regulations of the State Council postal authorities), rental and wholesale and retail business of audio-visual and electronic publications. Part-time insurance agents (see the Insurance Part-time Agency Business License for details, valid until April 7, 2115), prepackaged foods, wholesale and retail of alcohol (the Food Circulation License is valid until August 22, 2114), ticketing agents (see the China Civil Air Transport Sales Agency Business Qualification Certificate for details, valid until August 25, 2114), etc.