The more detailed the difference between e-mail and traditional postal letters, the better.

E-mail (e-mail for short, logo: @, also known as "Yi Meier"), also known as e-mail and e-mail, is a communication method that provides information exchange through e-mail. It is the most widely used service on the Internet: through the e-mail system of the network, users can get in touch with network users in any corner of the world in a very fast way (it can be sent to any destination you specify in the world in a few seconds), and the price is very low (no matter where it is sent, only the telephone and network fees need to be paid). These emails can be in many forms, such as text, images and sounds. At the same time, users can get a lot of free news and special emails to realize easy information search. This is unmatched by any traditional way. E-mail is widely used because of its simple use, rapid delivery, low cost, easy preservation and unimpeded global access, which has greatly changed people's communication methods. In addition, email can be sent in a one-to-many way, and the same email can be sent to many people at the same time. Most importantly, e-mail is a system that directly faces the information exchange between people in the whole Internet and all other network systems. Its data sender and receiver are both human beings, so it greatly meets the communication needs of a large number of people.

E-mail refers to the communication mode of transmitting letters, documents, materials and other information by electronic means. E-mail combines the characteristics of telephone communication and postal letters. It can transmit information as quickly as a telephone and make the receiver receive a written record like a letter at the receiving end. E-mail system is also called computer-based mail information system. It undertakes the whole processing process from the mail entering the system to the mail reaching the destination. E-mail can be transmitted not only through telephone network, but also through any communication network. When using the telephone network, you can also use it to transmit information during off-peak hours, which is of special value to commercial mail. An electronic system controlled by a central computer and a small computer for limited users can be regarded as a computer conference system.

The meaning of postal code is: postal codes are all six digits, and the postal codes of each place are different. One or two digits of the postal code represent provinces or municipalities directly under the central government. The third and fourth place represent the prefecture, city and state. The fifth and sixth people represent a county, a town or a residential area. Postal codes of various places

When People's Republic of China (PRC) was founded, it was formulated by the central government in a unified way, and the customs and habits of different countries were different in this way.

Postal code is a special code representing the post office (office) that delivers mail. It is also the communication code of residents and units within the delivery range of this bureau (institute). Postal code consists of 6 Arabic numerals, such as 529000. Its first two digits represent Guangdong Province (autonomous regions and municipalities directly under the Central Government); The third digit indicates the postal code (Jiangmen); The fourth digit represents the city (county) number; The last two represent the mail delivery office and the office. Postal code 529000 represents the delivery area of Jiangmen City, Guangdong Province.