4. In the section "Check mail from other accounts (using POP3)" click on Add a POP3 mail account you own.
In the "username" field enter your full e-mail address (for example, email@example.com or firstname.lastname@example.org).
Put a tick next to "Leave a copy of retrieved message on the server".
6. Go to section "Open the section "Accounts and Import". Click on Add another email address you own.
7. Fill in the spaces.
In the "E-mail address" field type your e-mail address and click Next Step:
Check the "Send through Gmail" and click Next Step:
Click the Send Verification button. You will receive instructions with confirmation link and verification code on your e-mail address.
Open your mailbox and open the message you received from Gmail. Click on the confirmation link or copy the verification code.
Return to the Gmail website,enter the code, and click Verify.