When a workspace has more than one WhatsApp number connected, there’s no way to choose which one a POST /messages WhatsApp template send comes from. The API picks a number itself, and nothing in the request or the workspace settings controls which.
We have two WhatsApp numbers in one workspace, one for customer support and one for partner support. We want to automate sending partner onboarding templates, but sends through the API go out from the customer support number. The replies then land on the wrong line and the partner sees an unfamiliar number. Outbound messages and Series already let you choose the number, but the API doesn’t.
Request: an optional field on POST /messages for the sending WhatsApp number, by phone number or by Intercom’s id. When it’s left out, keep today’s behavior.