Thanks! I wasn’t working in Marketing Emails yesterday, because in the past when I had worked on this setup (several years ago) - double opt-in was set globally with no option to change. I didn’t realize that by switching the feature to a specific page only, that it would remove that requirement on marketing emails.
Imagine my relief yesterday when it did work - that the very manual opt-in process we’ve used for the past several years for thousands of users can now be automated.
I’m beyond grateful to have come across your response to this user’s post, THANK YOU!