One thing to note: if you previously had a forwarder to your gmail account set up, you will need to disable it after you set up your gmail account to receive email via POP3
Adding an email address to your whitelist ensures that emails you receive from that address will not be blocked as spam, but will be delivered to your inbox.
To start using your whitelist, follow the following steps:
You need to do two things to setup your e-mail account: 1) Setup your incoming mail server (to receive mail) 2) Setup your outgoing mail server (to send mail)