Hi @J008 , you’re asking the right question, and your pushback is justified. The short version is that most of the confusion here comes from mixing three different layers: WhatsApp Business Accounts (WABA), HubSpot’s Conversations channels, and what third-party vendors say they support.
With how HubSpot works now in 2025, the only fully supported, native way to handle multiple WABA numbers in a single HubSpot account is exactly what Bérangère described: each phone number must be connected as its own WhatsApp channel in the Conversations inbox. HubSpot doesn’t care about “brands,” it cares about channels.
As long as all numbers belong to the same WABA and are verified, you can attach multiple numbers to one HubSpot portal and then route workflows, inboxes, and automation by channel (Connect a WhatsApp channel to the conversations inbox).
Most third-party apps fall down here because their HubSpot integration is single-connection–centric. They often support multiple WhatsApp numbers internally, but expose only one sender to HubSpot, which is exactly what you’ve already confirmed with MessageBird and WATI. In those cases, the limitation is not WhatsApp and not HubSpot, it’s the app’s integration model.
Platforms like Twilio Flex or Respond.io can work, but usually only if you’re comfortable with a more technical setup and treating HubSpot as one system in a broader messaging architecture rather than the primary sender. Claims like “choose sender inside HubSpot” should always be verified against the actual HubSpot app listing behavior, because many of them rely on custom UI outside native workflows.
So your realistic options are:
Use HubSpot’s native WhatsApp channels if you want clean workflow-based retargeting per brand.
Or accept an external messaging hub and looser HubSpot coupling if brand-level separation is more important than native automation.
You’re not missing a magic vendor. The constraint you’re hitting is real, and your testing already surfaced the truth most docs gloss over. Hope this helps you decide without burning more cycles.