Electronic Mail Address(E-mail Address)

Contents

• Introduction- Definition of Email- Introduction to Email

- Electronic Mail System a.) Host –based Mail System b.) LAN-based Mail System c.) ARPANET Mail System d.) Network-based Mail System

• Technical Section- Operation Overview- Protocols- Message Format

a.) Message Headerb.) Message Body

Contents

- Email Applications

a.) Software-based Mail Application - Microsoft Outlook - Outlook Expressb.) Web-based Mail Application (Webmail)

• Functions- Email in Society

- Email as “Flaming”- Email in Business

• References- References

Introduction

Introduction

Definition of Email

Electronic mail or known as an “e-

mail” is a system in internet which is based on “store and forward” model in which email server system accepts, forward, deliver and store messages on behalf user who only need to connect to the email infrastructure, the email server, with a network-enabled device for the duration of message submission and retrieval. It is the most widely used application in the internet.

Originally, email was created for text-only communication medium until it was developed to carry attachments, subjects or files.

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Introduction

Introduction to Email

• Electronic mail predates the inception of the internet.

• It started in 1965 as a way for multiple users of a time-sharing mainframe computer to communicate.

Electronic Mail (Email) SystemHost-based Mail system

- allows communication between users in one host or mainframe.

- but it can consists of hundreds or thousands of users (a company or a university).

- in 1996, allows email between different companies as long as they ran in compatible operating system.

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Introduction

LAN-based mail system- allows communication between users who logged in same mainframe server.- the difference is that it can be generally linked between different companies as long as they ran the same email system and protocol.

ARPANET Mail System

- Experimental inter-system e-mail transfers began shortly after it has been created in 1969.- Ray Tomlinson was credited having sent the first email using the “@” sign in separating the user to the user’s machine in 1971.

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Introduction

• An example of an Internet email address that routed mail to a user at a UUCP host:

hubhost!middlehost!edgehost!user@uucpgateway.somedomain.example.com

Network-based Mail System

• Initially exchanged network email in ARPANET in extension of the File Transfer Protocol, but today is carried by Simple Mail Transfer Protocol.

• First Published as Internet Standard in 1982.

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Technical Section

Technical Section

Operation Overview

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Technical Section

Protocols FTP (File Transfer Protocol)

- an internet standard specified for the mail transmission in ARPANET days before it was replaced by the SMTP.

POP (Post Office Protocol) - an internet standard specified for mail retrieval.

DNS (Domain Name System)- an internet standard responsible for distributing domain names in the system and mapping them with the IP Addresses.

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Technical Section

SMTP (Simple Mail Transfer Protocol)- an internet standard specified for outgoing mail transport and uses TCP port 25.-today, it has been developed into extended SMTP or known as the ESMTP.

MIME (Multipurpose Internet Mail Extensions)- the internet standard which is used today for extending the email to support:a.) Text in character sets other than ASCIIb.) Non-text attachmentsc.) Message bodies with multiple partsd.) Header information in non-ASCII Character sets

• Large proportion of automated email is transmitted via SMTP in MIME format, sometimes they call it SMTP/MIME.

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Technical Section

Message Format

Internet e-mail consists of two major sections:

Message Header - section of a mail which is structured into several

fields:a.) From: - can be the e-mail address or optionally the

name of the sender or the author/s of the message to be send or forwarded.

b.) To: - the e-mail address/es or optionally the name/s of the messages’ recipients. It can be the primary recipients (multiple allowed) and secondary recipients, the “Cc: and “Bcc:”

“Cc:” (Carbon Copy) – mark the inbox if you are in To: or Cc: list.

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Technical Section

“Bcc:” (Blind Carbon Copy) – addresses added to the delivery list but not usually listed on the message data, remaining invisible to other recipients.

c.) Subject: - a brief summary of the topic of the message. Certain Abbreviations like “RE: and FW:” are commonly used in this field.

d.) Date: - this is the local time and date when the message was written.

Message Body - the message itself as unstructured text, it may

contain signature block. This is exactly the same as the body of a regular letter.

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Technical Section

Sample of an Email Messaging

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Technical Section

Email Applications Email Applications are divided into two

classifications:1.) Software-based Mail application2.) Web-based Mail Application

Software –based Mail Applicationthis includes the following:

Microsoft Outlook- formerly known as Microsoft Office Outlook is a personal information manager from Microsoft.- it supports internal network within a certain range of connection. (company, university)

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Technical Section

Outlook Express

- is an email and news client that is included in Internet Explorer versions 4 through 6.0.

- it is also bundled with several versions of Microsoft Windows 98, 2000 and XP and Windows 95 and Macintosh 9.

- it is different with the Microsoft Outlook in terms of Architectural Philosophy yet they share common code base.

- usually supports external email messaging from one network to another via internet.

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Technical Section

Software-based Mail Applications

MS Outlook

Outlook Express

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Technical Section

Web-based Mail Application (Web Mail)

- web-based mail application are email services that are primarily accessed through web browser opposed to through desktop email-client (such as Microsoft Outlook, Mozilla’s Thunderbird)

- advantage on this application is that the user can access their inbox from any Internet-connected computer around the world.

- internet connection is a requirement to access this kind of mail application.

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Technical Section

Web-based Mail Application (Web Mail)

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Functions

Functions

Email in Society

- email had rapidly evolved in the society as one of the ways in social communication.- research has shown that people actively maintain core social network, particularly when others live at a distance.

- However, contradictory to previous research, the results suggest that increases in Internet usage are associated with decreases in other modes of communication, with proficiency of Internet and e-mail use serving as a mediating factor in this relationship.

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Functions

Email as “Flaming”

- the term “flaming” occurs when a person sends message with anger and or antagonistic content.

-it has been more common today because of the ease and impersonality of email communications.

- Flaming is generally looked down upon by Internet communities as it is considered rude and non-productive.

- typing a message is in a form of indirect interaction so civility may be forgotten.

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Functions

Email in Business

- Email was widely accepted by the business community as the first electronic communication medium.

- E-mail provides a way to exchange information between two or more people with no set-up costs and that is generally far less expensive than physical meeting or phone calls.

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References

References

http://simple.wikipedia.org/wiki/email

http://en.wikipedia.org/wiki/email

http://robertbykowski.com/web_one/historyOfWeb/1970.html

http://en.wikipedia.org/wiki/Webmail

http://en.wikipedia.org/wiki/Outlook_Express

http://en.wikipedia.org/wiki/Microsoft_outlook

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Thank You!!