When we work with large email senders or migrate them to a new email service provider (ESP), email deliverability is paramount in researching the performance of their email marketing efforts. I’ve criticized the industry before (and I continue to) because the permission of email is on the wrong side of the equation. If internet service providers (ISPs) wish to guard your inbox from SPAM, then they should be managing the permissions to getting those emails in your inbox. Instead, ISPs rely on algorithms that wind up blocking good email and often letting spam through anyways.
