This post was so helpful-- thank you! I’m looking to do a permission pass like email to all of our subscribers to ask them if they would like to subscribe to a separate email newsletter for a blog that we do. However, I’m not sure how to properly allocate the “subscribe buttons” to make sure that if they opt-in, they’re added to a separate list for this specific newsletter. Also, I’m not sure if this is the right place to ask this question, but any help with this would be great!