If you use several e-mail addresses hosted by different providers (live, yahoo, gmail), there is a simple solution so that you don't have to enter all the accounts to receive and send e-mails. It is enough to set your accounts by live.com, hotmail.com or yahoo.com, on account of Gmail.
Here's how we can set a mail.live.com address in the Gmail account:
1. Log in to your Gmail account and go to the link "settings” (somewhere in the upper right).
2. Under "Settings", click on the "Accounts" tab, and under "Receive messages sent to your other e-mail accounts", click on "Add an email account you have”.

3. Enter your live.com address & "next step"

4. Add your live.com account settings. ENTER live.com address, word and set:
Server POP: pop3.live.com 
Port: 995
Check the box for SSL connection.

5. Set if you want to send mails from the Gmail account, with the live.com address.

6. To check if the mail.live.com address belongs to you, a message with a validation code will be sent to the address set by you (Send the check). Go to the mail.live.com account and copy the verification code.

After entering the correct code and clicking on the "Verify" button, the mail.live.com address is set to the gmail account. Receive and send live.com emails directly from your gmail account.

To set up a Yahoo! Mail, an account is required Yahoo! Mail Plus, or by a hack. We'll be back :)
 
			