Thank you so much for this reply. I would never know one email can be whitelisted.
Should the whitelisting come before Registration or after one has got banned for evil fee?
You have to be a newly registered member have a username on Bitcointalk. This will let you know if spammers already used that ip and the IP has some evil points associated to it. After that you can then email for whitelisting
How to get your Proxyban removed?
I can only whitelist you if I know you exist.