How can I sell a digital subscription that grants access to a private SMS list?

[nohollidays]

Hey y’all! I’m launching a digital product.

I want to sell this as a digital membership on my Shopify store

Here’s what I need help with:

• What’s the best way to sell a digital subscription that doesn’t include a physical product?

• I’m using Postscript for SMS — how can I automatically add/remove subscribers from a specific SMS list or segment based on their active subscription status?

• Should I use a subscription app like Appstle, Seal, or Recharge for tagging customers based on status?

• Is there a better way to gate access to a text list without needing to deliver physical goods?

Open to any advice, workflows, or app suggestions to make this simple and smooth. Thanks in advance!