Whether you want to delete that old webmail account because it gets far too much spam, you regret the unprofessional user name you chose as a teenager or you have a new account and don't check the old one, deleting your webmail account is easy. In most cases, closing a webmail account is permanent, so make sure you've given out a new email address to all your contacts before you get rid of the old one.
Yahoo!
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Step 1
Open your computer's web browser and enter "https://edit.yahoo.com/config/delete_user" in the toolbar. This takes you to the Yahoo Account Termination.
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Step 2
Sign into the Account Termination page with your Yahoo! id and password.
Step 3
Re-enter your password in the box and enter the Captcha tag. Click the "Yes" button at the bottom of the page to delete your Yahoo! webmail account.
Hotmail
Step 1
Open up your web browser. Then type the following URL into your web browser's tool bar: "http://account.live.com/CloseAccount.aspx."
Step 2
Enter your Hotmail password in the box and press "Sign in." Wait for the new page to load.
Step 3
Re-enter your password and click "Yes" to close the Hotmail account.
Gmail
Step 1
Sign into your Gmail account with your username and password at "http://gmail.com."
Step 2
Click the "Settings" button at the top right. Under the "Accounts and Imports" tab click "Google Account Settings."
Step 3
Push the "Edit" button next to "My Products," the large bold header. This open the page where you can delete Gmail.
Step 4
Follow the link under "Delete Account." Enter your password and click the two boxes next to "Yes." Push "Delete Google Account" to close your Gmail account.