Hi all, a while back I launched wavey.tips - to my surprise, it gained around 480 users. Now I'm interested in delving a little into building a mailing list around the community.    Problem is, when the users signed up, there's nowhere to opt in for email marketing. Would it be wise or completely unwise to send an email asking members to opt in or out? The practice doesn't necessarily feel right.    Interested to hear thoughts! ✌️