Hi @JelliBakes,
Welcome to the Community! Happy to help!
This is a great call out! Ultimately, no this is not a feature that we have, nor is it something we could request/create as a feature in the future. This is because of the functionality of SMS consent, where if someone unsubscribes, they unsubscribe all together from all SMS. Unfortunately, it’s not like email where users can unsubscribe for certain lists.
However, you could attach a property in a SMS Welcome flow or create custom keywords for users to text that would let you know how/what they want to receive via SMS. For instance, if you send users down a SMS Welcome Flow you could as users to choose if they want to receive brand updates, discounts, sales info from you or only ‘important’ messages like from their personal order/shipping updates etc. This was you could create a segment of users who have this attached profile property of ‘important’ and know to exclude this segment from any SMS campaigns you send.
Hope this helps!
-Taylor