I have heard of substack and watched a few videos, but I am still not sold on the idea of adding another platform onto my roaster. I am trying to create a newsletter and substacks supposedly helps with that? and promotion etc...so I would like the opinions of busy people who use it...can I upload a newsletter directly, or do I have to absolutely create one on their platform? Did it help grow your audience and generate sales? Do you use their special features like memberships, podcast etc? I really want to know your experience if you are have or are using it, thank you.