The interesting thing about whitelisting is that you have to be sending a lot of emails so the company determine if you are sending spam or not. So if you have

The interesting thing about whitelisting is that you have to be sending a lot of emails so the company determine if you are sending spam or not. So if you have a private domain, your own mail server, and are sending only a small number of emails then your not going to get whitelisted. Sometimes you can get on a feedback loop but all that will tell you is if someone clicked on "this is spam".