1. Email WeeSan Lee weesan@cs.ucr.eduweesan@cs.ucr.edu

2. Roadmap History Email Account Email Clients Access Emails Email Basics Advance Features Emoticon & Acronyms Netiquette Conclusion & References

3. History In 1971, Ray Tomlinson of BBN invented email program In 1972, @ was used to separate username and hostname

4. Email Account username@host.domain  Eg. weesan@cs.ucr.eduweesan@cs.ucr.edu Get an account from  ISP, eg. weesan@pacbell.netweesan@pacbell.net  University, eg. weesan.lee@email.ucr.edu  Department, eg. weesan@cs.ucr.eduweesan@cs.ucr.edu  Google, eg. weesan@gmail.comweesan@gmail.com  …

5. Username & Password Username or userid? Choose a good username*  A good choice is first initial and last name Eg. wlee  A bad username might cause you your job! Choose a good password  At least 8 characters long  Mix UPPER & lower case, numbers and symbols Eg. ^Bambo0!

6. Email Clients A program to read emails GUI-based (Graphic User Interface)  Thunderbird  Eudora  Outlook Express  Outlook Text-based  Pine Web-based  Gmail  Hotmail

7. Email Clients - Examples http://arstechnica.com/images/thunderbird/thunderbird-ss1-sm.gif

8. Access Emails POP  Post Office Protocol  Version 3, ie. POP3  Require an email client IMAP  Internet Message Access Protocol  May or may not require an email client Web-based  Require a web browser

9. POP A way to retrieve/download emails locally  Connect, download, disconnect  Ideal for offline mail usage Require an username & password Incoming Mail Server  A server for downloading emails  Eg. pop.cs.ucr.edu  Options for: How often to download emails Leave emails on the server

10. POP (cont) Outgoing Mail Server  A server for sending emails  Eg. smtp.cs.ucr.edu  Use SMTP (Simple Mail Tranfer Protocol) Incoming and outgoing mail server could be the same

11. IMAP A way to access emails directly on the server  Usually stay connected, also provide offline mode  No local burden Require an username & password IMAP server  A server where emails are stored Outgoing mail server and IMAP server could be the same

12. Webmail - Web-based email Use a browser to access emails anywhere Usually a front-end to an IMAP server Signup is easy  Username of your choice*  Complete a few forms Eg.  http://webmail.ucr.edu/ http://webmail.ucr.edu/  http://webmail.cs.ucr.edu/ http://webmail.cs.ucr.edu/  Google mail or Gmail  Hotmail  Yahoo mail

13. Webmail - Example

14. Webmail (cont) Messages and address book are stored on the server  Backup important messages and email addresses  Security issues Messages and addresses are stored remotely Be sure to logout after use Drawback for public webmail  A few advertising lines on each outgoing message  Popup ads or on the side

15. Email Basics (Gmail) Read Email Write/Compose an Email Reply Reply All Forward

16. Email Basics - Read Email

17. Email Basics - Compose an Email

18. Email Basics Reply  Send email back to the sender Reply All  Send email back to all original recipients Forward  Send email (including original message) on to someone else

19. Email Headers

20. Email Headers (cont) To  To someone for direct information or action  Comma separated for multiple recipients Eg. weesan@cs.ucr.edu, santa@northpole.orgweesan@cs.ucr.edusanta@northpole.org Cc  Carbon copy or computer copy  To someone for their information Bcc  Blind carbon copy or blind computer copy  The recipients in To and Cc can’t see recipients in this field

21. Email Headers (cont) Return-Path: Received: from esmtp.cs.ucr.edu (esmtp.cs.ucr.edu [138.23.169.83]) by iliad.cs.ucr.edu (Postfix) with ESMTP id 6D5F42CA4019 for ; Tue, 16 Oct 2007 02:08:55 -0700 (PDT) Received: by esmtp.cs.ucr.edu (Postfix, from userid 202) id 13B802632CF; Tue, 16 Oct 2007 02:08:52 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on esmtp.cs.ucr.edu X-Spam-Level: * X-Spam-Status: No, score=1.8 required=5.0 tests=AWL,BAYES_50, MSGID_FROM_MTA_ID autolearn=no version=3.1.3 Received: from mail3.sea5.speakeasy.net (mail3.sea5.speakeasy.net [69.17.117.5]) by esmtp.cs.ucr.edu (Postfix) with ESMTP id DA9E2262DF7 for ; Tue, 16 Oct 2007 02:07:34 -0700 (PDT) From: "PhD Comics" To: Date: Tue, 16 Oct 2007 00:13:39 -0700

22. Email Headers (cont) Correction from the book, pg. 117 Routers and servers add these when the message is passwd along the line. SMTP servers add these when the …

23. Plain Text vs. HTML Email Don’t send HTML Email  Not all are using a GUI or web-based email client Don’t send both plain text and HTML email  Bloated

24. Advanced Features File Attachment Address Book Filters Vacation Message Signature Sorting & Search Email Management Encryption

25. Advanced Feature - File Attachment Email was designed to send plain text Binary files need to be encoded before “attaching” in an email  Eg. Word document, image files, audio/video files Usually Base64 encoding is used  A-Z, a-z, 0-9, +, -  So, attachment is usually 1/3 bigger than original

26. Advanced Feature - File Attachment

27. Advanced Feature - Address Book Allows the use of names instead of email addresses in To, Cc and Bcc fields Avoid emails from people in the address book being flagged as SPAM AKA Contacts

28. Advanced Feature - Filters

30. Advanced Feature - Vacation Message Automatically reply a short message back to the sender Click Settings/General

31. Advanced Feature - Signature Automatically include your contact information in each email you send Click Settings/General

32. Advanced Feature - Sorting & Search Emails can be sorted based on arrival time, subject, To, From, size, etc Emails are searchable

33. Advanced Feature - Email Management

34. Traditional email clients use folders  Save related messages to the same folder Eg. All emails from friends are saved to friends folder  Problem Email A : An email from a colleague who is also a friend Email B : An email from a friend talking about food Gmail uses labels  Label Email A both as “colleague” and “friend”  Label Email B both as “friend” and “food”

35. Advanced Feature - Encryption PGP (Pretty Good Privacy)  Public and private keys For example, Alice wants to send Bob an encrypting email  Email encrypted = Alice private {Bob public {Email}}  Alice sends Email encrypted to Bob as an attachment  Bob gets the original email back by reversing the process  Email = Bob private {Alice public {Email encrypted }} Correction from the book, pg. 132

36. Emoticons :-)smile :)smile - no nose 8-)smile with glasses :-/hmmm :-(sad face :(sad face - no nose

37. Acronyms BTWBy the way IMOIn my opinion IMHOIn my humble opinion LOLLaugh out loud BBLBe back later TTFNTa-ta for now RTFMRead the f**king manual

38. Netiquette Proper Internet social behavior  Network etiquette RFC1855 - Netiquette Guidelines  Never send chain letters via electronic mail  Do not send heated messages Heated messages are called “flames” “Be conservative in what you send and liberal in what you receive”  Use a signature < 4 lines

39. Netiquette (cont)  DON’T SHOUT  Use symbols for emphasis Eg. This *is* what I meant  Use underscores for underlining Eg. _War and Peace_ is my favorite book.  Wait overnight to send emotional responses to messages  Be concise & keep the message short  Don’t send emails over 100K Send URL instead

40. Netiquette (cont)  Use a meaningful subject line  Be careful what you say  Make yourself look good online Use spelling and grammar checker

41. Conclusion Presented basic and advanced email usage Described emoticons, acronyms and netiquette

42. References Internet Effectively  Ch 4

43. HW4 - https://webmail.cs.ucr.edu/

46. HW4 - https://fish.cs.ucr.edu/phprocmail/