The birth of electronic mail occurred in 1965 at MIT. Ray Tomlinson sent the first message between two computers in 1971 using the "@" symbol to denote sending from one computer to another. Email was further developed to allow organization into folders and offline reading. Common email protocols include SMTP, POP3, and IMAP. Email is important as it saves time and money while allowing instant communication. HTTPS encrypts messages sent over HTTP for secure transmission. FTP allows two computers to connect over the internet and transfer files by converting them to binary for transmission.

1. SHISHPAL VISHNOI
NIT SRINAGAR

3. ORIGIN
The birth of electronic mail(e-mail) occurred in the 1965 at Massachusetts Institute of Technology was “mailbox”. Mailbox is a file in a
user’s home directory that was readable by only that user. After that another program designed called “SNGMSG” to send messages on
came computer. With the advancement of network’s technology, an electronic mail message file to place in 1971 when a computer
engineer named Ray Tomlinson sent a test message between two machines via ARPANET – the precursor to the internet.
He use “@” symbol from keyboard to denote sending messages from one to another computers. Larry Robert invented “Email folder”.
In 1975, John Vittal developed software to organized Email. Then further develop into “offline mode” for “offline readers”. After that
email had really taken off and commercial packages began appear.

4. MAIL SERVERS
Simple mail transfer protocol (SMTP)
Post Office protocol(POP3)
Internet Mail Access Protocol(IMAP)
Types of E-mail
E-mail are broadly categories into three types:-
1. Marketing Emails
2. Notification Emails
3. Transactional Emails

5. IMPORTANCE
 Saves Money
 Saves Time
 Instant Response
 Regular Communication
 Going Viral
 No need to speak to recipient
 Messages can be marked as urgent
 Messages can be read as convenient
 Incoming messages are saved
Email reduces volume of paper

6. HTTP AND HTTPS

7. INTRO
 The Hyper Text Transfer Protocol(HTTP) is a client-server
network protocol.
 In use by the World-Wide Web since 1990.
 It is based on Request – Response Paradigm.

8. WHAT IS A PROTOCOL AND HTTP
• A Protocol is a standard procedure for defining and regulating communication. For
example TCP,UDP,HTTP etc.
• HTTP is the foundation of data communication for the World Wide Web.
• The HTTP is the Web’s application-layer protocol for transferring various forms of
data between server and client like plaintext , hypertext ,image , videos and sounds.

9. HTTPS
 HTTPS stands for Hypertext Transfer Protocol over Secure Socket Layer, or
HTTP over SSL.
 SSL acts like a sub layer under regular HTTP application layering .
 HTTPS encrypts an HTTP message prior to transmission and decrypts a message
upon arrival.
HTTPS by default used port 443 as opposed to the standard HTTP port of 8o.

10. FILE TRANSFER PROTOCOL

11. FILE TRANSFER PROTOCOL
• Allows two computers , a client and server, to connect over the internet.
• During this connection the server and client are able to then transfer various
files.
• This is done through converting files into binary and then transmitting files
into binary and then transmitting the data, this concise process allows
someone to download or upload a file to the internet.

12. FEATURES
• FTP operates in a client and server environment , meaning that the
remote machine is configured as a server, and consequently waits for
the other machine (client) to request a service from it.
• In UNIX , the service is provided by what is called a daemon, a small
task that runs in the background . The FTP daemon is called ftpd.

13. EXAMPLE
• Downloading MP3.
• Online games rely heavily on FTP.
• Other events like auctions and online trading use FTP to transact
business.
• FTP is commonly used to transfer Web page files from their
creator to the computer that acts as their server for everyone on
the internet.

14. THANKS