In the network, the email box can automatically receive emails sent by any email box on the network, and can store electronic files in various formats of specified sizes. The email address has a separate network domain name, and its email address is marked after @. The general format of the email address is: username@domain name.
The e-mail service is an information transmission service based on computers and communication networks. It uses electrical signals to transmit and store information to provide users with the ability to transmit electronic letters, digital faxes of documents, images and digital voices, etc. Various types of information. Email allows people to receive and send letters anywhere and at any time, solving the limitations of time and space and greatly improving work efficiency.
Origin
In 1992, a peculiar "post office" appeared at Fudan University and Shanghai Jiao Tong University. Here, letters were sent without stamps or envelopes, but with a piece of stationery. It only takes a few seconds for letters of any size to be displayed in front of the recipient. This is the e-mail box. E-mail, like ordinary mail, also requires an address. The difference between it and ordinary mail is that it is an electronic address. All users with mailboxes on the Internet have one or several email addresses of their own, and these email addresses are all unique. The mail server sends each email to each user's mailbox based on these addresses. The Email address is the user's mailbox address. Just like regular mail, whether you can receive your email depends on whether you have obtained the correct email address.
A complete Internet email address consists of the following two parts, in the following format: login name@hostname.domain name
Use a in the middle to represent "at" (at) Separated by the symbol "@", the left side of the symbol is the other party's login name, and the right side is the complete host name, which consists of the host name and domain name. Among them, the domain name consists of several parts, each part is called a subdomain (Subdomain), and each subdomain is separated by a dot ".". Each subdomain will tell the user some information about this mail server. 1. The corporate email ends with the company’s corporate domain name to improve the company’s corporate image in the process of communicating with customers. The free email addresses all end with the service provider's domain name.
2. The management authority for corporate mailboxes can modify user passwords, spaces, usage rights, etc., effectively preventing the company from losing business due to the resignation of salesmen.
3. High service quality assurance, effectively ensuring the smooth flow of corporate emails.
Although free mailboxes can also be used, they generally cannot meet the requirements of corporate users. Especially the stability of sending and receiving. If the problem of not being able to send and receive occurs frequently, it will definitely affect the business of the enterprise. Corporate mailboxes provide corporate users with higher-quality services, with higher guarantees in terms of security, stability, and efficiency in sending and receiving, and also have higher service capabilities in terms of rejection of spam and virus emails.
4. Advantages in overseas forwarding
Because China is recognized by the international anti-spam organization as the world's second largest spam producing country, free mailboxes are often sent overseas. If the email is bounced, if the corporate mailbox has an overseas forwarding server, this problem can be solved smoothly. ● Fast----Send the letter to the other party within ten seconds.
● Security----Compared with other mailbox systems, e-mail is a "official mailbox" specially designed for business users and has stricter
security measures.
● Perfect ---- many functions are designed for business users. Through e-mail, users can not only exchange e-mails with e-mail users and INTERNET users at home and abroad, but also send letters directly to the other party's fax machine. , telex terminals, and computers on packet-switched networks.
● Economical - one-third to one-half the cost of general postal delivery.
● Sending and receiving letters----Using email, users can not only send regular letters, registered letters, and urgent letters, but also
request the system to send a notification back after the other party receives the letter, or read the letter before sending it. Reply note etc. In addition, there are functions such as scheduled sending, replying immediately after reading the letter or forwarding it to others, multi-casting (sending a letter to multiple people at the same time), etc.
Users can write letters directly in the mailbox system, and the letters received by the other party will be classified and archived, and useless letters will be deleted.
● Direct delivery----If the other party is a non-mailbox user, you can send the letter directly to the other party's fax machine, telex machine, printer or
packet switching network computer superior.
● Bulletin board------a bulletin mailbox for everyone to use. Users can send the information they want to publish to this mailbox for everyone to read.
Bulletin boards are suitable for announcements, notices and advertisements.
● Roaming function----Using the packet switching network (CHINAPAC), you can achieve nationwide roaming. The following is a list of mailboxes that are common among individual users in China and have the majority of users. All the listed mailboxes provide free mail function services, which can be used immediately after registration. In no particular order.
163 Mailbox
163 Mailbox - the first brand of Chinese mailboxes. NetEase free mailbox, 3G space, supports large 20 MB attachments and 280 MB network disk. Precisely filter more than 98 spam emails.
Sina Mailbox
Sina Mailbox has a capacity of 2G, a maximum attachment of 15M, and supports POP3.
tom mailbox
TOM mailbox provides 1500 MB of large storage space. It makes sending and receiving emails faster, more stable and safer. It has professional 24-hour online anti-virus and rejects all spam. In addition, it comes with a 50 MB photo album and a 30 MB network hard drive that are stable and fast. It adopts the world's advanced load balancing technology to fundamentally optimize access, upload and download speeds. Security anti-virus introduces the world's top anti-virus software to comprehensively resist attacks by viruses, hackers and spam. Worry-free large attachments 1.5G mailbox capacity and 30 MB large attachment support allow you to communicate without worries.
21cn mailbox
The basic capacity of 21CN mailbox is 2.1G, which can be upgraded to 10G through points. 20M large attachments. Top-notch anti-virus software Kaspersky Anti-Virus. Fourth-generation intelligent anti-spam filtering. Mobile mail sending and receiving service, mail arrival reminder service POP3\SMTP\multi-protocol mail sending and receiving, you can keep the original free mail user name and directly upgrade to economic mail
Sohu Mail
Sohu Mail is a famous brand of Chinese mailbox. Provide Sohu free email service, provide 4G large space, and support a single large 10M attachment. The powerful anti-spam system filters nearly 98 types of spam for you.
QQ mailbox
Tencent mailbox has unlimited capacity, maximum attachment 50M, supports POP3, provides safe mode, built-in WebQQ, reading space, etc.
GMAIL
Gmail reduces spam. Use Google's innovative technology to keep spam out of your inbox. Huge Space Over 7397.615554 MB (and counting) of free storage.
139 mailbox
Completely free China Mobile 139 mailbox has no service fee. Mobile sending and receiving mobile terminals can send and receive emails through SMS, MMS, and WAP anytime and anywhere. The mobile phone number is the email name! The capacity is unlimited, and 1G network disk capacity is provided. Cooperate with Sophos to provide anti-virus security protection; powerful anti-spam system to effectively block spam; no need to register 139 mailbox corresponding to mobile phone number, send and receive mail on mobile phone
Hotmail mailbox
Microsoft owned mailbox. Large storage capacity of 5 GB. Can be increased indefinitely. NEW DESIGN: Choose your favorite colors and layout.
Start with the familiar Classic version, and switch to the full version at any time to take advantage of advanced security features from Microsoft. Patented Microsoft SmartScreen technology helps keep your inbox free from spam and viruses. Quickly see if your email is suspicious, remove spam completely with a single click, powerful virus scanning and removal, look and function like Outlook, preview messages in the reading pane, drag-and-drop organizing, and the ability to chat online in your mailbox. Massive 25 GB Skydrive.
2980 Email
2980 Email is a website product of Duoyi Network, which is committed to creating a professional and safe free email. 2980 Mailbox was released in June 2010, integrating professional game services, mobile phone number login, super email management, email black/white list settings, points redemption and other email features. The following is a comprehensive list of corporate email addresses that are commonly used by domestic corporate users. Service providers are listed in no particular order.
Sanwu Internet
Xiamen Sanwu Internet (China Channel) is a GEM listed company with 3.5G capacity, dual-line post office, 64-bit anti-spam system, and occupies the domestic corporate post office market About 20
263 Mailbox
263 Mailbox is the only independent email portal and the most dedicated email operation expert. The only dedicated carrier-grade IDC, with true north-south interconnection and overseas forwarding. The only anti-spam TAP gateway under the National 863 Program, with six national patents. The only top-level email antivirus engine to protect against email Trojans. The only national patent, 500M-1G super large attachment sent! Only fax email, unlimited business communications!
Zhongzizi
Xiamen Zhongzizi, a famous trademark in Fujian Province, a new corporate post office, unlimited mailbox capacity, 8-line post office, powerful functions. Many value-added functions such as mobile phone mailbox, SMS reminder, email and fax sending and receiving, instant messaging and so on have been implemented.
Wanwang
Wanwang, a well-known network provider in China, with a mailbox capacity of 1G
Xinwang
Xinwang, Xinwang NetEase Global Mail has upgraded its capacity to 365G
NetEase
NetEase, an old post office brand, was originally dedicated to free and paid personal mailbox services. In 2010, it began to focus on the development of the professional post office market.
Microsoft
Microsoft, the postal service of a famous foreign enterprise
Google, the postal service of a famous foreign enterprise
Tencent
Tencent, launched the public beta version of QQ Enterprise Mailbox in 2010
Sina
Sina Enterprise Mail, safe, stable and fast, with ten years of enterprise mailbox operation experience , the system is safe and stable, the world's top anti-spam engine, excellent overseas communication capabilities, high-quality customer service. In the autumn of 1971, Ray Tomlinson researched existing file transfer programs and information programs, and developed a new program. It can send and receive information through computer networks without any of the previous restrictions. In order to give people an easily identifiable email address, Tomlinson decided to use the @ symbol, preceded by the user name and followed by the user's email address. Email was born. But email was only available to a few hundred users of ARPANet at the time.
In the mid-1980s, with the rise of personal computers, email began to spread widely among computer enthusiasts and college students. Delivermail was written in 1979 by Eric Allman at Berkeley. In 1980, the SMTP protocol appeared, and Eric upgraded delivermail to sendmail. It is a packaged product without "unpacking authorization" restrictions. The Sendmail email system is indispensable for the rapid development of email.
In the mid-1990s, when the WWW (world wide web) introduced the concept of the first website browser, the number of Internet users around the world surged, and email services also grew with the widespread popularity of the Internet. It plays an increasingly important role in our lives, studies, and work.
On September 20, 1987, Qian Tianbai, known as "China's first Internet person", sent China's first email from Beijing via Italy to the University of Karlsruhe in the former Federal Republic of Germany. It is "Crossing the Great Wall and going to the world." This is the first step for Chinese people on the Internet, the first step in the form of Yimeier. This step is as significant to Chinese netizens as Armstrong's first step on the moon. He set a precedent for Chinese netizens.
Speaking of the first free email system designed by the Chinese themselves, we must mention Ding Lei, Chen Leihua and 163net. For the Chinese Internet, this is also a symbolic event. This first free email system was quickly posted by Ding Lei on 163net for free use by Chinese netizens at that time. China's first free electronic post office was thus born.
With the birth of China's first free email, many service providers took a fancy to the development potential of email, followed up one after another, and began to operate free email services. Portal sites such as Sina, Sohu, and China.com began to get involved in email services, triggering an email war between portal sites.
When email services no longer have an eye-catching effect, service providers began to look for new profit growth points. At this time, several websites such as 21cn, 263, and 163 successively launched paid mailboxes on the basis of continuing to serve the original free users. Subsequently, Sina, China's number one portal, also began to reduce the size of its free mailboxes and launch paid services. Two of China's four major portals have begun to announce some charges, triggering a heated discussion about "charges or free".
On March 18, 2002, 263 Capital Online made a shocking move and announced that it would stop free of charge after May 21. Many website CEOs and IT commentators commented on this matter. For domestic netizens, this is undoubtedly bad news. Some people commented that 263’s actions were too impulsive. Is the free era about to end because of this symbolic event?
In May 2006, Yahoo launched a 3.5G 20M mailbox. On June 7, NetEase mailbox was upgraded again and expanded to a 3G 20M large-capacity and large-attachment mailbox. The two giants have successively expanded the mailbox capacity and increased the loading capacity of attachments in less than a month. It brought a huge shock to the Internet, and it was a large-scale revolutionary movement to the e-mail market. What this movement brought about was the formation of new standards in the e-mail market.
On September 3, 2007, NetEase suddenly announced that it would conduct a large-scale upgrade of all its email systems during Teachers' Day (September 10) and launch free mailboxes with unlimited capacity. Not to be outdone, Yahoo and the two giants simultaneously launched unlimited free mailboxes. Email competition is on the rise again.
The battle between the two email giants is in full swing. Tencent has also been quietly upgrading QQ mailboxes. By December 2007, QQ free mailboxes were not only expanded to two gigabytes, but also carefully built. The unique notepad function is the first to increase the attachment capacity to an astonishing 1G through the file transfer station. Combined with the fact that it is bound to the QQ client, Tencent's pace of entering the domestic email field is unstoppable. It is foreseeable that the competition for e-mails will become increasingly fierce.
The development of email is like a mirror, reflecting the various mentalities of China's network operators and netizens during the development of the Internet. In any case, email is becoming more and more popular in people's lives, work, and study. At the same time, there is also a trend to combine multiple communication methods to form a three-dimensional and all-round communication network. In the meantime, email also plays a very important role. It is really hard to imagine what the life of Internet users would be like without email. Let's share our best wishes for a bright tomorrow.