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From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 1 Fundamentals of Fundamentals of Electronic Mail Electronic Mail Introduction Introduction • E-Mail: Advantages and Disadvantages • Userids, Passwords, and E- Mail Addresses • Message Components • Message Composition • Mailer Features • E-Mail Inner Workings • E-Mail Management • MIME Types

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Introduction. E-Mail: Advantages and Disadvantages Userids, Passwords, and E-Mail Addresses Message Components Message Composition Mailer Features E-Mail Inner Workings E-Mail Management MIME Types. E-Mail: Advantages and Disadvantages. Introduction Advantages Disadvantages. - PowerPoint PPT Presentation

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Page 1: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 1

Fundamentals of Electronic MailFundamentals of Electronic Mail

IntroductionIntroduction

• E-Mail: Advantages and Disadvantages• Userids, Passwords, and E-Mail Addresses• Message Components• Message Composition• Mailer Features• E-Mail Inner Workings• E-Mail Management• MIME Types

Page 2: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 2

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Introduction• Advantages• Disadvantages

E-Mail: Advantages and DisadvantagesE-Mail: Advantages and Disadvantages

Page 3: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 3

Fundamentals of Electronic MailFundamentals of Electronic Mail

Receive and send to:• Any country• Computer users• Many users at once• Computer programs

E-Mail: Advantages and DisadvantagesIntroductionIntroduction

Page 4: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 4

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Convenience• Speed• Inexpensive• Printable• Reliable• Global• Generality

E-Mail: Advantages and DisadvantagesAdvantagesAdvantages

Page 5: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 5

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Misdirection• Interception• Forgery• Overload• Junk (spam)• No response

E-Mail: Advantages and DisadvantagesDisadvantagesDisadvantages

Page 6: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 6

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Userids• Passwords• E-Mail Addresses• Domain Names• E-Mail Address Determinations• Local and Systemwide Aliases

Userids, Passwords, and E-Mail AddressesUserids, Passwords, and E-Mail Addresses

Page 7: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 7

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Login name, user name, account name• Mnemonic meaning

Userids, Passwords, and E-Mail AddressesUseridsUserids

Page 8: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 8

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Authentication• At least five characters• Contain nonalphabetical symbol• Contain a number• Uppercase and lowercase letters

Userids, Passwords, and E-Mail AddressesPasswordsPasswords

Page 9: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 9

Fundamentals of Electronic MailFundamentals of Electronic Mail

• [email protected]• @ = “at”• Suffix is general from left to right• No more than 256 characters

Userids, Passwords, and E-Mail AddressesE-Mail AddressesE-Mail Addresses

Page 10: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 10

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Country codes• Domain name space (DNS)• Distributed naming scheme• Generic top-level domain names:

• com commercial business edu education• gov U.S. government int international entity• org nonprofit organization mil U.S. military• net networking organization

Userids, Passwords, and E-Mail AddressesDomain NamesDomain Names

Page 11: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 11

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Ask the person• Program for locating people• Browser• Verify with program• Search engine

Userids, Passwords, and E-Mail AddressesE-Mail Address DeterminationsE-Mail Address Determinations

Page 12: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 12

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Easy-to-remember name• Distribution list or private distribution list• Local or private aliases• Public alias

Userids, Passwords, and E-Mail AddressesLocal and Systemwide AliasesLocal and Systemwide Aliases

Page 13: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 13

Fundamentals of Electronic MailFundamentals of Electronic Mail

E-mail client displays following information about each e-mail message:

• Date• Sender name• Size (bytes)• Subject line

Message ComponentsMessage Components

Page 14: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 14

Fundamentals of Electronic MailFundamentals of Electronic Mail

E-mail header• Full header includes route and message id• From• Date• To• Subject• Cc• Blind carbon copy (not visible)

Message ComponentsMessage Components

Page 15: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 15

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Body• Greeting• Text• Signature

• MIME Attachment

Message ComponentsMessage Components

Page 16: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 16

Fundamentals of Electronic MailFundamentals of Electronic Mail

Page 17: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 17

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Structure• Netiquette• Composition

Message CompositionMessage Composition

Page 18: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 18

Fundamentals of Electronic MailFundamentals of Electronic Mail

• To• Cc• Attachment• Subject• Text editor

Message CompositionStructureStructure

Page 19: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 19

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Emoticons• “SHOUTING”• Flaming

Message CompositionNetiquetteNetiquette

Page 20: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 20

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Signature file• Attach files• Insert a file

Message CompositionCompositionComposition

Page 21: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 21

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Compose, File, and Reply• Bracketed Text and Include• Forwarding

Mailer FeaturesMailer Features

Page 22: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 22

Fundamentals of Electronic MailFundamentals of Electronic Mail

Compose• New• Reply• Forward• Vacation

Mailer FeaturesCompose, File, and ReplyCompose, File, and Reply

Page 23: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 23

Fundamentals of Electronic MailFundamentals of Electronic Mail

File• Save• Insert• Exit• Open• Attach

Mailer FeaturesCompose, File, and ReplyCompose, File, and Reply

Page 24: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 24

Fundamentals of Electronic MailFundamentals of Electronic Mail

Reply • To sender• To all• Forward• Include• Include bracketed

* include original message

Mailer FeaturesCompose, File, and ReplyCompose, File, and Reply

Page 25: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 25

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Multiple e-mail addresses• .forward

Mailer FeaturesForwardingForwarding

Page 26: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 26

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Mailer, Mail Server, and Mailbox• Store and Forward Features• Central Mail Spool and IMAP• Bounce Feature

E-Mail Inner WorkingsE-Mail Inner Workings

Page 27: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 27

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Mailers• Mail program, mail application, mail client• Software

• Mail servers• Computer• Receive, store, and deliver e-mail

• MailboxesDisk file

E-Mail Inner WorkingsMailer, Mail Server, and MailboxMailer, Mail Server, and Mailbox

Page 28: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 28

Fundamentals of Electronic MailFundamentals of Electronic Mail

• 7 by 24 machine• Inbox• Save and pick-up• Post Office Protocol (POP)• Simple Mail Transfer Protocol (SMTP)• Main spool

E-Mail Inner WorkingsStore and Forward FeaturesStore and Forward Features

Page 29: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 29

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Interactive Mail Access Protocol (IMAP)• Encrypted passwords• Hybrid systems

E-Mail Inner WorkingsCentral Mail Spool and IMAPCentral Mail Spool and IMAP

Page 30: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 30

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Packets• Sequence numbers• Handshaking• E-mail bounces = is undeliverable:

• Bad user account name• Bad domain name• Domain name server down• Other malfunction

E-Mail Inner WorkingsBounce FeatureBounce Feature

Page 31: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 31

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Introduction• Action Options• Vacation Programs• E-Mail and Business

E-Mail ManagementE-Mail Management

Page 32: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 32

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Does e-mail help you at work?• Is e-mail a waste of your time?• Are you flooded with e-mail from mailing lists?• Is e-mail a distraction?• Are you constantly reading forwarded jokes?• How can e-mail make your life more enjoyable?• How can e-mail make you more productive instead of

less efficient?• Do you receive a lot of useless gossip?

E-Mail ManagementIntroductionIntroduction

Page 33: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 33

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Delete the message• Skip a message• Read the message• Triage

• Skim for important messages• Skim for what you can delete unread• Work through remainder

E-Mail ManagementAction OptionsAction Options

Page 34: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 34

Fundamentals of Electronic MailFundamentals of Electronic Mail

Skim and delete• Read important messages and delete rest• Deal with each message as possible• If more time needed, postpone

E-Mail ManagementAction OptionsAction Options

Page 35: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 35

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Automatically replies to e-mail• Considerations:

• Do most of your friends know you are going away?• Do most of your business associates realize you are on

vacation?• Are you subscribed to any mailing lists where many users

could be bombarded?• Will knowing you are away for a week make a big

difference?• Do you want people to know you are away?

E-Mail ManagementVacation ProgramsVacation Programs

Page 36: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 36

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Considerations (continued):• Do you want to generate additional and unnecessary e-

mail?• Do you tell recipients who to contact in your absence?

E-Mail Management

Page 37: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 37

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Currently legal for employer to read all company e-mail

• Business e-mail is backed-up and such back-ups can be subpoenaed

• Businesses sometimes use e-mail filters to restrict communications

E-Mail ManagementE-mail and BusinessE-mail and Business

Page 38: Introduction

From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 38

Fundamentals of Electronic MailFundamentals of Electronic Mail

• Multipurpose Internet Mail Extensions• ASCII text files (plaintext)• Binary files• Viruses

MIME TypesMIME Types


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