It's not an issue of being too hard to understand.
The moment I say "double opt in", marketing will decide I lack the skills to be involved in mail and deliverability will be placed in the hands of someone with a graphics design background that has never heard of dns.
I've seen it in every single place I've tried to help marketing campaigns for over 20 years.
It is a comms issue. You are fighting quantity vs quality and the default thought, though incredibly wrong headed, is "the more comms we send the more people hear the message the more we sell." Education around send quality doesn't always make sense on the surface.
You want engaged customers/contacts. The right message to the right customer at the right time to sell whatever you are selling. The worse you do this, the worse the delivery reputation, the less you land in the inbox.
These other decision makers know they don't personally want nor respond to spam. They have to realize that their customers feel the same.
The moment I say "double opt in", marketing will decide I lack the skills to be involved in mail and deliverability will be placed in the hands of someone with a graphics design background that has never heard of dns.
I've seen it in every single place I've tried to help marketing campaigns for over 20 years.