By the words ‘scientific', ‘futuristic' – what do we understand? We can understand some experiments, some attractive products, objects etc. But the science stays on the base of all. Starting the era from the very early days, till now, science has given to us many miracle inventions. One of them is ‘Computer'. Being originated from a Latin word, the computer has got its place almost each and every field and made people's works done very easily and within a few moments.

With the development of the computer, many facilities and properties have been developed that make it attractive and easy – operative to its user. One of these facilities is internet service. Through this facility, people are able to get connected to anyone, to anything with just a single click. We, the normal user are using this facility for our own need. But, the people who are providing this facility to us use some techniques and mechanisms by which they are able to do their jobs.

While talking about pop3 telnet commands, we must know at first what are these and what is their origin. We can take the term ‘Computer Networking' as the source of these telnet and pop3. The networking is done within a limited area so that the computers within that area become interconnected and can able to share information within them. According to the distance, Networking is classified as 3 types – LAN (Local Area Network), MAN (Multiple Area Network) and WAN (Wide Area Network). Rather talking about these things, let us now focus on the main topic, which includes two most important protocols of the networking. The first one is ‘Telnet' and the second one is ‘POP3'. Let us know a few about these two. Telnet is normally used on LAN and Internet. Text – oriented messages pass through it. The message transfer process is bidirectional. The first telnet joined the computer networking family on 1969. Its first version was RFC15.

POP or Post Office Protocols are normally used on e – mail service system. It works over the TCP/IP (Transfer Control Protocol/Internet Protocol) connection. There are a series of pop3 telnet commands; those are used to get the mail over the internet. Here are some of the commands and their uses:

The code for the proper user and for his/her mailing password uses the commands USER and PASS.

To know about the mailing status, it uses the command STAT. It actually shows how many messages are there in the mailbox.

The use of the command LIST is same as the command STAT, the command that is used to get a message is RETR, if a message needs to be removed from the mailbox, DELE command is used.

Unwillingly, if some mistakes have been performed, then using the RSET command the previous stage can be gained back.

TOP command performs quite similar to the command RETR. To get disconnected with the server, the QUIT command is used.