Chapter 9 Sending and Attachments

2Practical PC 5 th Edition Chapter 9 Getting Started In this Chapter, you will learn: − How works − How to use Web-based and local − How to reply to and forward messages − About attachments and the size limits for messages and attachments − About spam − About Hardware: Mobile Internet access devices

3Practical PC 5 th Edition Chapter 9 How does work? is a digital document transmitted from one computer to another, usually over the Internet – Computers and software that provide services form an system – At the heart of the system is an server that runs server software – Store-and-forward technology means that incoming is stored on an server until your server requests them

4Practical PC 5 th Edition Chapter 9 How does work? Two types of systems are commonly used: – Web-based means you connect to the Web to read and compose messages using browser software – Local software runs on your hard drive and allows you to compose and read your mail while offline. Local is also called POP mail based on the Post Office Protocol software used on the server

5Practical PC 5 th Edition Chapter 9 How does work? Local Web-based

6Practical PC 5 th Edition Chapter 9 How do I use Web-based ? To use Web-based – Sign up for an account with an service such as Google, MSN or Yahoo! – Use your browser to connect to your account – You can write, read, reply-to, and delete messages Benefit of Web-based – A big benefit is that your will be available from any computer with an Internet connection – Remember to log-off so others don’t access your account

7Practical PC 5 th Edition Chapter 9 How do I use Web-based ? Web-based

8Practical PC 5 th Edition Chapter 9 How do I use local ? To use local – You need an account, address, and password on a POP server – Local client software, such as Microsoft Outlook is also needed – To send (Outbox) or receive (Inbox) messages start your e- mail client – The Send/Receive button usually initiates download Since local is stored on your hard disk, it is your responsibility to back up your mail

9Practical PC 5 th Edition Chapter 9 How do I use local ? Local

10Practical PC 5 th Edition Chapter 9 How do I reply to and forward messages? Messages on the same topic are referred to as a thread To reply to a message, click the Reply button – Message is opened and addressed – Typically, you include the text of previous message To forward a message, click the Forward button – You fill in address and subject line – Most software allows you to edit and comment on the content of the forwarded message

11Practical PC 5 th Edition Chapter 9 What’s an attachment? An attachment is a file that travels along with an message More on attachments: – software indicates an attachment with an icon such as a paperclip – Recipient must have software that works with the attachment to open it – Some attachments can harbor viruses so be careful, especially with.exe attachments

12Practical PC 5 th Edition Chapter 9 What’s an attachment? Sending an with an attachment

13Practical PC 5 th Edition Chapter 9 Is there a size limit for messages and attachments? Typically the size limit of messages and attachments are between 2 MB and 10 MB Shrinking the file size of attachments: – For large files, compression software can ‘zip’ the file into a compressed version – Most video and sound formats shrink to about half their size – Text and some graphics shrink substantially – JPEG and GIF files are already compressed

14Practical PC 5 th Edition Chapter 9 What is spam? Spam is unwanted electronic junk mail Phishing is an based scam that’s designed to persuade you to reveal confidential information A spam filter is a utility software that captures unsolicited before it reaches your Inbox Never reply to spam or click on the links in the spam s

15Practical PC 5 th Edition Chapter 9 Hardware: Mobile Internet access devices Mobile Internet access offers continuous Internet connection wherever you go – Mobile phone that can connect to the Internet is sometimes called a smartphone – A PDA (personal digital assistant) is a handheld device that features a touch screen, a personal organizer, a memory slot, and the ability to synchronize data with a PC – A broadband PC card is a digital circuit board that plugs into your notebook computer

16Practical PC 5 th Edition Chapter 9 Hardware: Mobile Internet access devices Examples of mobile devices

17Practical PC 5 th Edition Chapter 9 Hardware: Mobile Internet access devices Mobile – Many mobile systems feature push e- mail where is delivered to your mobile device with a sound alert – A microbrowser is specially designed to display Web pages on a small screen WAP microbrowsers provide access to Web sites designed especially for small screens HTML microbrowsers provide access to the regular full size Web sites

18Practical PC 5 th Edition Chapter 9 Just how private is ? What do you think? – Do you think most people believe that their is private? – Do you agree with CalTech’s decision to expel the student who was accused of sending harassing e- mail to another student? – Do you think that should have the same privacy protections as telephone conversations and mail under U.S. laws?

19Practical PC 5 th Edition Chapter 9 Chapter Summary You should now know: − How works − How to use Web-based and local − How to reply to and forward messages − About attachments and size limits for messages and attachments − About spam − About Mobile Internet access devices