1) Sign in to Gmail and select the gear icon.
2) Select Settings from the menu options.
3) Select Filters and Blocked Addresses from the Settings menu and choose Create a New Filter.
4) Enter the email address you would like to whitelist in the From field followed by your email address in the To field, then select Create Filter.
5) Check the box marked “Never send it to Spam”, then select Create Filter to save the new filter.