​@nhp_info Thank you for this question. If you see a clear disclaimer about not being able to use Workflow Builder, then I would trust that assessment. If you plan to use automated SMS, then it is important that is properly disclosed. We created this guide to help:

Hello,
Automated, repetitive, list-based, or marketing messaging is not allowed on conversational campaign types (this includes internal or external conversational messaging).  Utilizing automated SMS on this type of campaign would be considered a prohibited use/ or something referred to as campaign drift and could result in your campaign being suspended.

For automated messaging, we would recommend utilizing a different campaign type (such as customer care, account notifications, etc) or a combination of these campaign types.  These campaigns can still be used for conversational messaging in addition to automated, repetitive, or list based messaging (as well as marketing for the marketing campaign type).

Please note that regardless of what campaign type you use, consent prior to sending SMS messages (including automated messages) is required.  This consent should be logged and auditable if a carrier requests.

Hope that helps,
Mike