I need your email to communicate with you privately. But I'd like to add it to my mailing list, too. I'll send you an "opt-in" email to confirm with you that I have your permission to do that. If you don't want to be on my mailing list, do not confirm. Later, if you want to unsubscribe, that's easy to do. I use the email list to keep you in the loop about updates, promotions, or events before I post it on social media.