What is proof of permission and why do I need to provide it?
Proof of permission is some sort of record that tells us that your list is permission-based. By permission-based, we mean that every single person on your list has given you the green light - in one form or another - to email them. To take things further, the contacts on your list must be from people who know, without question, that they're giving you permission to email them. To put
Contact Lists August 6, 2018