Omnichannel

Hi everyone, We receive inbound conversations through WhatsApp, but in many cases the customer’s WhatsApp number is not associated with any existing user in our Intercom workspace. Our desired flow is:The contact starts a conversation via WhatsApp. We ask for their email address. Intercom checks whether that email already belongs to an existing user in the workspace. If it exists, we send an OTP code to verify ownership of the email address. Once the verification succeeds, the conversation is automatically associated with the existing user instead of remaining as a lead.Is this flow possible using native Intercom features only (Workflows, Fin, identity verification, etc.), or would it require implementing it through the Intercom API? Thanks in advance!