My only email address now is firstname.lastname@example.org. My Gmail is cancelled because they were controlling access to 3rivers.
BLOCK LISTS are run by 1,000 different companies which contract with email providers to filter spam. They block and return messages without telling you.
BLACK LISTS are the pop name for BLOCK lists, but they deserve the name, being black ops type operations.
WHITE LISTS are those maintained by BLOCK list companies that are supposed to let messages through, no matter what. Like for instance if your mother is dying. So far mine is full of bugs (my white list, not my mother), and I never email bugs. The number of names is limited.