Pay an existing MPP draft without resubmitting its document

Pay an existing MPP PDF, letter, workflow-form draft, or ordinary bulk-mail campaign. Create the draft through an MCP draft tool or create_machine_order with payment_protocol=mpp and buyer_email. Review its PDF preview or bulk campaign_url, recipients and total, then POST {} here to fetch this endpoint's WWW-Authenticate challenges. After buyer approval, retry the same endpoint with Authorization: Payment ... . Do not reuse a challenge from a different endpoint or resubmit documents or CSV. Paid or settled-pending-webhook orders are returned without charging again. Bulk responses include campaign_url and recipient/status counts.

post/api/machine/mpp/orders/{id}/pay

Request

  • Base URL: https://postalform.com
  • URL: https://postalform.com/api/machine/mpp/orders/{id}/pay
  • Auth: none required

Path parameters

idstring uuid required

Headers

Authorizationstring

Buyer-approved MPP Payment credential

Request body

object required

Response

Payment accepted, already paid, or awaiting Stripe webhook verification. Do not pay again.

Changes

No recorded changes to this operation across all 1 revision of this API.