---
title: "POST /v1/workspaces/{workspaceId}/sending-domain-migrations"
method: POST
path: "/v1/workspaces/{workspaceId}/sending-domain-migrations"
---

# POST /v1/workspaces/{workspaceId}/sending-domain-migrations

`POST /v1/workspaces/{workspaceId}/sending-domain-migrations`

## Request

- Base URL: `https://api.bangermail.com`
- URL: `https://api.bangermail.com/v1/workspaces/{workspaceId}/sending-domain-migrations`
- Auth: HTTP bearer

Freeze the exact setup and observed DNS into a pending domain.migrate approval. Does not provision resources. Only a signed-in administrator may authorize it through the Approvals panel; agent credentials and automatic review are rejected. Authorization atomically rechecks the DNS snapshot and prepares the approved domain.

## Headers

- `Idempotency-Key` string, required

## Request body

- object
  - `domain` string, required: The product's exact domain or subdomain. By default Banger derives three separate lane subdomains.
  - `setup_mode` 'simple' | 'advanced': Simple provisions one mailbox transport for receiving and sending from selected mailbox addresses, including Broadcasts and Journeys. Advanced provisions separate sending lanes.
  - `mailbox_mode` 'subdomain' | 'migrate': Simple setup defaults to the root when no mailbox prefix is supplied; advanced defaults to a subdomain. Subdomain preserves existing domain mail. Migrate requests Mailboxes at the exact domain. An occupied exact domain or lane requires a request through sending-domain-migrations followed by authorization in the signed-in Banger Approvals panel. Agent credentials cannot authorize migration. No old messages are imported and DNS is never changed automatically.
  - `root_dmarc_confirmed` boolean: Legacy compatibility field; existing policies are preserved and setup requires no confirmation.
  - `lane_prefixes` object
    - `mailbox` string
    - `product` string
    - `broadcast` string
  - `route_providers` object: Resend is accepted only when Banger already detected it in this domain's DNS and the selected product has an active connection. Clients must never advertise it otherwise.
    - `product` 'banger' | 'resend'
    - `broadcast` 'banger' | 'resend'
  - `route_domains` object: Exact verified domains synchronized from Resend. Required for each lane that keeps Resend.
    - `product` string
    - `broadcast` string

## Response `200`

Existing migration request returned idempotently.

- object
  - `data` ApprovalRequest, required
    - `id` string, uuid, required
    - `requested_by_actor_id` string, required
    - `action_kind` string, required
    - `summary` string, required
    - `capability_scopes` string[], required
    - `resource_scope` object, required
    - `payload` object, required
    - `payload_sha256` string, required
    - `status` 'pending' | 'approved' | 'rejected' | 'cancelled' | 'expired', required
    - `missed` boolean, required
    - `expires_at` string, date-time, required
    - `qa_automation` object, nullable: Server-recorded dedicated QA automation provenance; never evidence of a human payload review. The run and global authorization are rechecked at execution.
      - `kind` 'dedicated_qa_automation'
      - `authorization_reference` string
      - `run_id` string
      - `operation_key` string
      - `recipients` string[]
      - `approval_sha256` string
      - `resource_sha256` string
    - `decided_by_actor_id` string, nullable
    - `decision_reason` string, nullable
    - `created_at` string, date-time, required
    - `updated_at` string, date-time, required
    - `decided_at` string, date-time, nullable
    - `execution_job_id` string, uuid
    - `review` object
      - `disposition` 'automatic' | 'human_required', required
      - `recipient_count` integer, nullable, required
      - `reasons` string[], required
      - `checks` string[], required

## Other responses

- `201`: Pending migration authorization created.

---

[API](https://skmtc.dev/bangermail/apis/banger-api.md) · [All operations](https://skmtc.dev/bangermail/apis/banger-api/llms.txt) · [OpenAPI document](https://skmtc.dev/bangermail/apis/banger-api/revisions/a149909267f9?raw)