In the upper-right corner, select theSettings(gear) icon.
From the menu, chooseSettings.
SelectFilters and Blocked Addresses.
SelectCreate a new filter.
If you already have many filters, you’ll have to scroll down to find this link.
A dialog box appears.
In theFromfield, bang out the email address you want to allow.
Be sure to jot down the full email address, likeexample@yahoo.com.
At the bottom of the dialog box, selectCreate filter.
On the next screen, tell Gmail what to do with the email address or domain you just indicated.
To do so, selectNever send it to Spam.
To finish the process, selectCreate filter.
bring up the message.
In the upper-right corner of the message, select thethree-dot(menu) icon.
SelectFilter messages like this.
With the email address now auto-filled for you in theFromfield, follow steps 5 and 6 above.
Additional Gmail Filtering Tips
When creating filters in Gmail, keep these additional points in mind.