Today it is already difficult to provide as some more decades people did without e-mail which strongly entered life of the modern person. E-mail is necessary for business, business correspondence, for registration on the websites and on social networks, for communication and transfer of different information: it is possible to attach documents to the text of the letter, audio-, video files, the archived documents.
1. In 2015 e-mail will celebrate the fortieth anniversary from the date of the start in work. And her ancestor is the American programmer Ray Tomlinson who received in the late seventies last century from the Ministry of Defence of the United States of America the order for development of the special software - a computer network of ARPANET. In the early sixties military already began to use modern developments – the digital applications allowing to carry out data transmission by means of computer technologies. But it were very short messages. Besides the present possibility only was available to the users working on different terminals of one machine.
2. Ray Tomlinson decided to go further and to be engaged closely in the question charged to him and group of supporter colleagues. In 1971 he completely devoted himself to new development which moved heaven and earth over time. But in the early eighties it were only experimental applications. Gradually Ray Tomlinson supplemented them and improved. At first he thought up the data transfer protocol which was used in work of only unit of staff of department. And in the last days of November, 1975 he managed to send to the colleagues very short, consisting of only eight characters remote message with the text of qwertyui. This event became the real break in computer technologies, and the program received the name SNDMSG from a phrase Send Message.
3. To receive the letter, the user had to create the electronic mailbox for collection of information in advance. Originally it represented the text document at the end of which the user could write the message. Access to this information and a possibility of its editing it was available only to the creator of a mailbox.
4. Having achieved the solution of the task set for itself, the developer continued to improve and supplement the program. So, he was engaged in creation of the experimental CYPNET protocol which allowed to communicate with users of remote computers in ARPANET network. At that time it integrated already fifteen nodes. The CYPNET project allowed to carry out transfer of data, SNDMSG – to edit information. Later Tomlinson corrected both applications and connected them in one general program. To teach to define the system of "the" or "foreign" addressee working on one computer with the connected ARPANET system it was necessary only to resolve an issue with a name of a mailbox and its location. Having attentively considered the characters which are available on the keyboard, Tomlison suggested to use "doggie" - @. After some experiments it was succeeded to redirect correctly the letter to the necessary recipient on "someone else's" computer. The task was solved and over the years became widespread not only in military developments, but also in peaceful life. Later this new with participation and completions of Doug Engelbat who led e-mail to a modern view successfully entered usual life and regular users of the Internet. And now for many is an integral part of their life.