How do I update my email account to accept new email addresses ?

I am signing up on free survey sites to take surveys and one has asked me to update my email account to make sure my Inbox accepts their email and it doesn't go to my Bulk folder.

How do I update my email account to accept new email addresses ?
Any email address that's in your Yahoo Address Book will not get put into your bulk folder. So make sure you add the email address that will be sending you the survey info to your Address Book at http://address.yahoo.com
Reply:click on the persons address that emailed you