Update domain email catch-all

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Configure the domain-level catch-all behavior for unmatched addresses. Get {id} from GET /api/v2/domains data[].id. This is part of domain email forwarding, not shared-hosting forwarders. If the domain is attached to a shared-hosting account and you want hosting mailboxes/forwarders to keep handling mail, manage forwarding through /api/v2/shared-hosting/{accountId}/email-forwarders instead. Send action: "forward" with forwardTo to forward all unmatched mail, action: "drop" to silently discard unmatched mail, or action: "fail" to disable/fail unmatched delivery. The response is the refreshed catch-all object, not the full forwarding state.

Domains & DNS Email Forwarding

Authentication

Required API scopes: write:emailwrite:domains

Use Authorization: Bearer <token> for API keys. Dashboard sessions may also use hostup_session.

Context

Related endpoints

GET /api/v2/domains/{id}/email-forwarding Get domain email forwarding PATCH /api/v2/domains/{id}/email-forwarding Toggle domain email forwarding POST /api/v2/domains/{id}/email-forwarding Create domain email forwarding rule

Path Parameters

id string required Example: dom_01hxa3b4c5d6e7f8g9h0j1k2m3

Public domain ID from `GET /api/v2/domains` `data[].id`. Do not invent this value; use the exact ID returned by the referenced API response.

Headers

Accept Example

Content-Type Example

Body

required

application/json

action string · enum required · Example: forward

`fail` is the v2 public label for disabling the catch-all route.

forward

drop

fail

forwardTo string · Example: [email protected]

Required only when `action` is `forward`.

Responses

200 Refreshed catch-all state.

action string · enum required · Example: forward

forward

drop

disabled

destination stringnull required · Example: [email protected]

400 Invalid request. The response body is an RFC 7807 Problem Details document.

type string · Example: https://developer.hostup.se/errors/invalid_request

title string · Example: Validation failed

status integer · Example: 400

detail string · Example: The request body failed validation.

code string · Example: invalid_request

Stable machine-readable code. Branch on this field, not on `detail`.

instance string · Example: /api/v2/orders

requestId string · Example: req_01hxa3b4c5d6e7f8g9h0j1k2m3

timestamp string · Example: 2026-04-27T12:34:56.000Z

errors array<object>

Field-level validation errors when `code` is `invalid_request`.

errors[].pointer string required · Example: /items/0/eppCode

errors[].detail string required · Example: `eppCode` is required for this transfer.

errors[].code string required · Example: missing_required

extensions object

401 Unauthorized. Authentication is required.

type string · Example: https://developer.hostup.se/errors/invalid_request

title string · Example: Validation failed

status integer · Example: 400

detail string · Example: The request body failed validation.

code string · Example: invalid_request

Stable machine-readable code. Branch on this field, not on `detail`.

instance string · Example: /api/v2/orders

requestId string · Example: req_01hxa3b4c5d6e7f8g9h0j1k2m3

timestamp string · Example: 2026-04-27T12:34:56.000Z

errors array<object>

Field-level validation errors when `code` is `invalid_request`.

errors[].pointer string required · Example: /items/0/eppCode

errors[].detail string required · Example: `eppCode` is required for this transfer.

errors[].code string required · Example: missing_required

extensions object

403 Forbidden. The caller lacks a required scope or does not own the resource.

type string · Example: https://developer.hostup.se/errors/invalid_request

title string · Example: Validation failed

status integer · Example: 400

detail string · Example: The request body failed validation.

code string · Example: invalid_request

Stable machine-readable code. Branch on this field, not on `detail`.

instance string · Example: /api/v2/orders

requestId string · Example: req_01hxa3b4c5d6e7f8g9h0j1k2m3

timestamp string · Example: 2026-04-27T12:34:56.000Z

errors array<object>

Field-level validation errors when `code` is `invalid_request`.

errors[].pointer string required · Example: /items/0/eppCode

errors[].detail string required · Example: `eppCode` is required for this transfer.

errors[].code string required · Example: missing_required

extensions object

404 Not found. The resource does not exist or is not owned by the caller.

type string · Example: https://developer.hostup.se/errors/invalid_request

title string · Example: Validation failed

status integer · Example: 400

detail string · Example: The request body failed validation.

code string · Example: invalid_request

Stable machine-readable code. Branch on this field, not on `detail`.

instance string · Example: /api/v2/orders

requestId string · Example: req_01hxa3b4c5d6e7f8g9h0j1k2m3

timestamp string · Example: 2026-04-27T12:34:56.000Z

errors array<object>

Field-level validation errors when `code` is `invalid_request`.

errors[].pointer string required · Example: /items/0/eppCode

errors[].detail string required · Example: `eppCode` is required for this transfer.

errors[].code string required · Example: missing_required

extensions object

409 Conflict. See the Problem Details `code` for the route-specific blocker and recovery fields.

type string · Example: https://developer.hostup.se/errors/invalid_request

title string · Example: Validation failed

status integer · Example: 400

detail string · Example: The request body failed validation.

code string · Example: invalid_request

Stable machine-readable code. Branch on this field, not on `detail`.

instance string · Example: /api/v2/orders

requestId string · Example: req_01hxa3b4c5d6e7f8g9h0j1k2m3

timestamp string · Example: 2026-04-27T12:34:56.000Z

errors array<object>

Field-level validation errors when `code` is `invalid_request`.

errors[].pointer string required · Example: /items/0/eppCode

errors[].detail string required · Example: `eppCode` is required for this transfer.

errors[].code string required · Example: missing_required

extensions object

429 Rate limited. Retry after the limit resets. 429 responses include `Retry-After` seconds plus `X-RateLimit-*` headers.

type string · Example: https://developer.hostup.se/errors/invalid_request

title string · Example: Validation failed

status integer · Example: 400

detail string · Example: The request body failed validation.

code string · Example: invalid_request

Stable machine-readable code. Branch on this field, not on `detail`.

instance string · Example: /api/v2/orders

requestId string · Example: req_01hxa3b4c5d6e7f8g9h0j1k2m3

timestamp string · Example: 2026-04-27T12:34:56.000Z

errors array<object>

Field-level validation errors when `code` is `invalid_request`.

errors[].pointer string required · Example: /items/0/eppCode

errors[].detail string required · Example: `eppCode` is required for this transfer.

errors[].code string required · Example: missing_required

extensions object

500 Internal error. Retry later or contact support if the issue persists.

type string · Example: https://developer.hostup.se/errors/invalid_request

title string · Example: Validation failed

status integer · Example: 400

detail string · Example: The request body failed validation.

code string · Example: invalid_request

Stable machine-readable code. Branch on this field, not on `detail`.

instance string · Example: /api/v2/orders

requestId string · Example: req_01hxa3b4c5d6e7f8g9h0j1k2m3

timestamp string · Example: 2026-04-27T12:34:56.000Z

errors array<object>

Field-level validation errors when `code` is `invalid_request`.

errors[].pointer string required · Example: /items/0/eppCode

errors[].detail string required · Example: `eppCode` is required for this transfer.

errors[].code string required · Example: missing_required

extensions object

PUT https://cloud.hostup.se/api/v2/domains/{id}/email-forwarding

For AI assistants

View as Markdown

Scenario

cURL

curl -X PUT "https://cloud.hostup.se/api/v2/domains/dom_01hxa3b4c5d6e7f8g9h0j1k2m3/email-forwarding" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Accept: application/json" \
  -H "Content-Type: application/json" \
  -d '{
    "action": "forward",
    "forwardTo": "[email protected]"
  }'

Response

{
  "action": "forward",
  "destination": "[email protected]"
}

{
  "type": "object",
  "properties": {
    "action": {
      "type": "string",
      "enum": [
        "forward",
        "drop",
        "disabled"
      ]
    },
    "destination": {
      "type": [
        "string",
        "null"
      ]
    }
  }
}

Request Body Forward all unmatched mail

{
  "action": "forward",
  "forwardTo": "[email protected]"
}