Follow these steps
1.Open Google and click sign in (at the top right side)
2.Sign in With your Google email id and password.
3.Click on My Account (at the top right side)
4.Go to Personal information at left side and then click Edit.
5.Go to Associate email addresses with your account.
Add new additional email address
6.Type new email address in add an additional email address box.
7.And click save button.
8.Now Google send you verification email on your additional email address.
9.Open your additional email account, where you found Google Email Verification? email.
10.Open it and Click verify link.
11.Type your password and then click verify button.
12. And then on the next screen you found Associated Email Address Verified.
Remove additional email address
13. For removing additional email, click on remove button under “Associate email addresses with your account” and then click save button.
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