you can't do that. instead use the labels. labels make searching your emails faster and easier. click on the help link in there
archive your emails to get them out of your inbox
★★ GMail Help ★★
◙ You no longer need to be invited to GMail. You can sign yourself up below.
☞ http://www.gmail.com/
◙ NOTE: THIS IS VERY IMPORTANT! There are two differnt ways to use your web-based GMail account. When you first enter GMail you are in the basic HTML view. The basic HTML view is a little different than what you're used to because the following features aren't available: Filter creation, Settings (Including Forwarding and POP), Spell checker, Keyboard shortcuts, Address auto-complete, Custom From addresses. To get these features and more, click on the link at the top that says "Switch to standard view".
◙ Which browsers are fully-supported by GMail?
☞ https://mail.google.com/support/bin/answer.py?answer=15314&topic=1553
◙ Here is some information that will help you with GMail.
◙ One of the best features is how easy it is to keep up with a conversation with a single friend. All of your previous posts to that
person are right there for you to review in case you forgot what you were talking about. Another good feature is that everyone that emails you is automatically added into your contacts list (address book). Currently there is no way to opt out of that. Maybe later they will add that feature.
◙ GMail is currently in beta testing and isn't ready to be released to the general public. This is why you had to be invited to use it instead of just signing up for it like you would normally do with everything else. Because it is still being tested it will occasionally not do what you want it to do. When this happens keep trying until it gives up and report it to one of the following GMail Help groups below.
◙ Usually after a week or two you will be given the ability to invite others to Gmail. You will know when the time comes because a form will appear in the lower-left corner of your screen. Also when answering an email you will see a link that says "Invite So And So To Gmail". So and so is the name of the person you are emailing.
☞ http://groups-beta.google.com/group/Gmail-Help-Discussion
☞ http://groups-beta.google.com/group/Gmail-Generation
☞ http://s90215429.onlinehome.us/sjvilla79/content/gg-faq.html
◙ Other helpful GMail links.
☞ http://en.wikipedia.org/wiki/Gmail
☞ http://email.about.com/od/gmail/
☞ http://www.google.com/search?q=gmail&hl=en&lr=&start=10&sa=N
◙ There are some other things you can do with the space in your Gmail account. One of them is called "GDrive". It's a program you download that lets you use your Gmail account as a network drive. Search Google with the keyword "gmail" and you'll see a lot of new stuff. More is being created everyday.
◙ Anyone wanting a GMail email address can get one from me by emailing cssiscool@gmail.com I have hundreds of invites left. When I run out I can get more.
◙ TIP: If your computer crashes while writing an email Gmail will save what you have typed in the Drafts folder and you can finish it when you login again. :)
◙ PLUS ADDRESSING ◙
◙ Gmail also supports "plus-addressing" of emails. Messages can be sent to addresses in the form: gmail.user+extratext@gmail.com where extratext can be any string. Plus-addressing allows users to sign up for different services with different aliases and then easily filter all e-mails from those services. It does not appear, however, that the +string feature works when sending email from a gmail account to itself. Additionally (in some cases) the string appended to the e-mail address may not be longer than six characters. Below is an example. fred@gmail.com and fred+amazon+shopping will send email to the same inbox.
◙ If you have a web site of your own and you want to put your email address in a link with plus addressing you have to do something special to make it work properly. You have to replace the + sign with these characters %2B like below.
Email Me