List webhook delivery attempts - Sendmux

List webhook delivery attempts

curl --request GET \
  --url https://app.sendmux.ai/api/v1/webhooks/{public_id}/deliveries \
  --header 'Authorization: Bearer <token>'

{
  "meta": {
    "request_id": "req_clxxxxxxxxxxxxxxxxxxxxxxxxx"
  },
  "data": [
    {
      "id": "whda_clxxxxxxxxxxxxxxxxxxxxxxxxx",
      "event_id": "evt_clxxxxxxxxxxxxxxxxxxxxxxxxx",
      "event_type": "message.bounced",
      "result": "success",
      "response_status": 200,
      "response_ms": 184,
      "delivery_attempt": 1,
      "max_attempts": 8,
      "next_retry_at": null,
      "error_message": null,
      "response_body": "ok",
      "payload_available": true,
      "payload_expires_at": "2026-05-28T09:12:00Z",
      "request_payload_bytes": 2048,
      "request_payload_sha256": "b1946ac92492d2347c6235b4d2611184d4e4f8f2f43a5f2d8d5b7a4a6f0c1e2d",
      "created_at": "2026-05-21T09:12:00Z"
    }
  ],
  "pagination": {
    "has_more": true,
    "next_cursor": "<string>"
  }
}

GET

/

webhooks

/

{public_id}

/

deliveries

List webhook delivery attempts

curl --request GET \
  --url https://app.sendmux.ai/api/v1/webhooks/{public_id}/deliveries \
  --header 'Authorization: Bearer <token>'

{
  "meta": {
    "request_id": "req_clxxxxxxxxxxxxxxxxxxxxxxxxx"
  },
  "data": [
    {
      "id": "whda_clxxxxxxxxxxxxxxxxxxxxxxxxx",
      "event_id": "evt_clxxxxxxxxxxxxxxxxxxxxxxxxx",
      "event_type": "message.bounced",
      "result": "success",
      "response_status": 200,
      "response_ms": 184,
      "delivery_attempt": 1,
      "max_attempts": 8,
      "next_retry_at": null,
      "error_message": null,
      "response_body": "ok",
      "payload_available": true,
      "payload_expires_at": "2026-05-28T09:12:00Z",
      "request_payload_bytes": 2048,
      "request_payload_sha256": "b1946ac92492d2347c6235b4d2611184d4e4f8f2f43a5f2d8d5b7a4a6f0c1e2d",
      "created_at": "2026-05-21T09:12:00Z"
    }
  ],
  "pagination": {
    "has_more": true,
    "next_cursor": "<string>"
  }
}

Authorizations

Authorization

string

header

required

Sendmux API key. Use a root API key for Management API routes, or a mailbox credential for Mailbox API routes. Obtain keys from the dashboard under API Keys.

Path Parameters

public_id

string

required

Webhook public ID

Query Parameters

cursor

string

Pagination cursor — the next_cursor from the previous response.

limit

integer

Maximum results (default 25, max 100)

Required range: 1 <= x <= 100

event_type

enum<string>

Filter by event type.

Available options:

message.delivered,

message.bounced,

message.complained,

message.rejected,

message.delivery_delayed,

message.received,

message.received.spam,

sendmux.test

Example:

"message.bounced"

result

enum<string>

Filter by delivery result.

Available options:

success,

retrying,

failed,

permanent_failure

Response

Delivery-attempt list

ok

enum<boolean>

required

Available options:

true

meta

object

required

Hide child attributes

meta.request_id

string

required

Example:

"req_clxxxxxxxxxxxxxxxxxxxxxxxxx"

data

object[]

required

Hide child attributes

data.id

string

required

Delivery-attempt public ID

Example:

"whda_clxxxxxxxxxxxxxxxxxxxxxxxxx"

data.event_id

string

required

Webhook event ID

Example:

"evt_clxxxxxxxxxxxxxxxxxxxxxxxxx"

data.event_type

enum<string>

required

Event types a webhook may subscribe to. sendmux.test is accepted so you can verify end-to-end delivery via POST /webhooks/{id}/test.

Available options:

message.delivered,

message.bounced,

message.complained,

message.rejected,

message.delivery_delayed,

message.received,

message.received.spam,

sendmux.test

Example:

"message.bounced"

data.result

enum<string>

required

Delivery result for this attempt.

Available options:

success,

retrying,

failed,

permanent_failure

Example:

"success"

data.response_status

integer | null

required

HTTP status returned by the endpoint, or null for network/timeout failures.

Example:

200

data.response_ms

integer

required

End-to-end delivery latency in milliseconds.

Required range: x >= 0

Example:

184

data.delivery_attempt

integer

required

1-based retry attempt number.

Example:

1

data.max_attempts

integer

required

Maximum attempts before the subscription is marked failing.

Example:

8

data.next_retry_at

string | null

required

Next retry timestamp when result is retrying; otherwise null.

Example:

null

data.error_message

string | null

required

Public-safe network error category when no HTTP response was received.

Example:

null

data.response_body

string | null

required

Truncated endpoint response preview, if any.

Example:

"ok"

data.payload_available

boolean

required

True while the delivered request payload can still be fetched.

Example:

true

data.payload_expires_at

string

required

Timestamp when the retained request payload expires.

Example:

"2026-05-28T09:12:00Z"

data.request_payload_bytes

integer

required

Size of the delivered request payload in bytes.

Required range: x >= 0

Example:

2048

data.request_payload_sha256

string | null

required

SHA-256 digest of the delivered request payload.

Example:

"b1946ac92492d2347c6235b4d2611184d4e4f8f2f43a5f2d8d5b7a4a6f0c1e2d"

data.created_at

string

required

ISO 8601 attempt timestamp

Example:

"2026-05-21T09:12:00Z"

pagination

object

required

Hide child attributes

pagination.has_more

boolean

required

pagination.next_cursor

string

Get a webhook subscription

Get a webhook delivery payload