Open a Mail Hub campaign and choose External delivery.
- Select the campaign email step to export.
- Select a mapped Mailchimp audience or Brevo list.
- Confirm the sender name and reply-to address.
- Create the provider campaign draft.
- Send now or schedule the external send through Mail Hub.
- Refresh provider metrics after delivery.
Each selected Mail Hub sequence step becomes one provider campaign. Mail Hub does not silently recreate an entire multi-step sequence at the provider.
Avoid duplicates: do not launch the same audience through the native Mail Hub campaign worker and an external provider. Mail Hub adds protections around this workflow, but operators should still treat the two delivery paths as mutually exclusive for the same send.