Fundamentals of Electronic Mail Introduction EMail Advantages and

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

Fundamentals of Electronic Mail E-Mail: Advantages and Disadvantages • Introduction • Advantages • Disadvantages From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 2

Fundamentals of Electronic Mail Introduction E-Mail: Advantages and Disadvantages Receive and send to: • • Any country Computer users Many users at once Computer programs From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 3

Fundamentals of Electronic Mail Advantages E-Mail: Advantages and Disadvantages • Convenience • Speed • Inexpensive • Printable • Reliable • Global • Generality From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 4

Fundamentals of Electronic Mail E-Mail: Advantages and Disadvantages • Misdirection • Interception • Forgery • Overload • Junk (spam) • No response From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 5

Fundamentals of Electronic Mail Userids, Passwords, and E-Mail Addresses • Userids • Passwords • E-Mail Addresses • Domain Names • E-Mail Address Determinations • Local and Systemwide Aliases From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 6

Fundamentals of Electronic Mail Userids, Passwords, and E-Mail Addresses • Login name, user name, account name • Mnemonic meaning From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 7

Fundamentals of Electronic Mail Passwords Userids, Passwords, and E-Mail Addresses • Authentication • At least five characters • Contain nonalphabetical symbol • Contain a number • Uppercase and lowercase letters From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 8

Fundamentals of Electronic Mail E-Mail Addresses Userids, Passwords, and E-Mail Addresses • username@hostname. subdomain. dom • • • ain @ = “at” Suffix is general from left to right No more than 256 characters From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 9

Fundamentals of Electronic Mail Domain Names Userids, Passwords, and E-Mail Addresses • Country codes • Domain name space (DNS) • Distributed naming scheme • Generic top-level domain names: • commercial business education • gov U. S. government international entity • org nonprofit organization mil U. S. military • networking organization From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 10

Fundamentals of Electronic Mail E-Mail Address Userids, Passwords, and E-Mail Addresses Determinations • Ask the person • Program for locating people • Browser • Verify with program • Search engine From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 11

Fundamentals of Electronic Mail Local and Systemwide Userids, Passwords, and E-Mail Addresses Aliases • Easy-to-remember name • Distribution list or private distribution list • Local or private aliases • Public alias From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 12

Fundamentals of Electronic Mail Message Components E-mail client displays following information about each e-mail message: • • Date Sender name Size (bytes) Subject line From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 13

Fundamentals of Electronic Mail Message Components E-mail header • • Full header includes route and message id From Date To Subject Cc Blind carbon copy (not visible) From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 14

Fundamentals of Electronic Mail Message Components • Body • Greeting • Text • Signature • MIME Attachment From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 15

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

Fundamentals of Electronic Mail Message Composition • Structure • Netiquette • Composition From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 17

Fundamentals of Electronic Mail Structure Message Composition • To • Cc • Attachment • Subject • Text editor From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 18

Fundamentals of Electronic Mail Netiquette Message Composition • Emoticons • “SHOUTING” • Flaming From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 19

Fundamentals of Electronic Mail Composition Message Composition • Signature file • Attach files • Insert a file From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 20

Fundamentals of Electronic Mailer Features • Compose, File, and Reply • Bracketed Text and Include • Forwarding From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 21

Fundamentals of Electronic Mail Compose, File, and Reply Mailer Features Compose • • New Reply Forward Vacation From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 22

Fundamentals of Electronic Mail Compose, File, and Reply Mailer Features File • • • Save Insert Exit Open Attach From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 23

Fundamentals of Electronic Mail Compose, File, and Reply Mailer Features Reply • • • To sender To all Forward Include bracketed * include original message From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 24

Fundamentals of Electronic Mail Forwarding Mailer Features • Multiple e-mail addresses • . forward From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 25

Fundamentals of Electronic Mail E-Mail Inner Workings • Mailer, Mail Server, and Mailbox • Store and Forward Features • Central Mail Spool and IMAP • Bounce Feature From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 26

Fundamentals of Electronic Mail E-Mail Inner Workings Mailer, Mail Server, and Mailbox • Mailers • Mail program, mail application, mail client • Software • Mail servers • Computer • Receive, store, and deliver e-mail • Mailboxes Disk file From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 27

Fundamentals of Electronic Mail E-Mail Inner Workings Store and Forward Features • 7 by 24 machine • Inbox • Save and pick-up • Post Office Protocol (POP) • Simple Mail Transfer Protocol (SMTP) • Main spool From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 28

Fundamentals of Electronic Mail E-Mail Inner Workings Central Mail Spool and IMAP • Interactive Mail Access Protocol (IMAP) • Encrypted passwords • Hybrid systems From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 29

Fundamentals of Electronic Mail Bounce Feature E-Mail Inner Workings • Packets • Sequence numbers • Handshaking • E-mail bounces = is undeliverable: • • Bad user account name Bad domain name Domain name server down Other malfunction From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 30

Fundamentals of Electronic Mail E-Mail Management • Introduction • Action Options • Vacation Programs • E-Mail and Business From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 31

Fundamentals of Electronic Mail Introduction E-Mail Management • 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? From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 32

Fundamentals of Electronic Mail Action Options E-Mail Management • Delete the message • Skip a message • Read the message • Triage • Skim for important messages • Skim for what you can delete unread • Work through remainder From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 33

Fundamentals of Electronic Mail Action Options E-Mail Management Skim and delete • Read important messages and delete rest • Deal with each message as possible • If more time needed, postpone From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 34

Fundamentals of Electronic Mail Vacation Programs E-Mail Management • 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? From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 35

Fundamentals of Electronic Mail E-Mail Management • Considerations (continued): • Do you want to generate additional and unnecessary e-mail? • Do you tell recipients who to contact in your absence? From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 36

Fundamentals of Electronic Mail E-mail and Business E-Mail Management • 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 From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 37

Fundamentals of Electronic Mail MIME Types • Multipurpose Internet Mail Extensions • ASCII text files (plaintext) • Binary files • Viruses From Greenlaw/Hepp, In-line/On-line: Fundamentals of the Internet and the World Wide Web 38