Python

Endpoints

`webhooks.list`, `list_all`, `iterate`, `get`, `create`, `update`, `delete`, `rotate_secret`, `test`, `get_delivery` and `replay_delivery`, and the delivery and activity logs.

Every method

usage.py

from acme.secrets import store endpoint = client.webhooks.create({    'url': 'https://acme.com/hooks/mail',    'eventTypes': ['email.sent', 'email.bounced'],    'description': 'Billing service',}) store(endpoint['secret']) client.webhooks.list()client.webhooks.get(endpoint['id'])client.webhooks.update(endpoint['id'], {'enabled': False})client.webhooks.test(endpoint['id'])latest = client.webhooks.list_deliveries(endpoint['id'], limit=1)['items'][0]client.webhooks.get_delivery(endpoint['id'], latest['id'])client.webhooks.replay_delivery(endpoint['id'], latest['id'])rotated = client.webhooks.rotate_secret(endpoint['id'])store(rotated['secret'])client.webhooks.delete(endpoint['id'])

create is the ONLY time the secret is returned, apart from rotate_secret. A read never echoes it, so store it before doing anything else. Omit eventTypes for the default set, every email.* event except email.replied. email.replied, domain.*, suppression.*, file.* and form.* reach an endpoint only when it names them.

rotate_secret has no overlap window. The old secret stops working immediately, so deploy the new one before you rotate. It is never retried automatically: a retry would rotate a second time and invalidate the secret the first attempt returned.

What you can subscribe to

WEBHOOK_EVENTS is exported so you can render the list. Events are events of the **mailbox**, not of this API: email.received fires for mail that arrives in the app, and email.sent fires for a message the composer sent. Subscribing is not the same as watching your own API traffic.

file.uploaded fires when a file is put on the Files page, and file.deleted when one is deleted. Their data is FileEventData: fileId, filename, mimeType, sizeBytes, direction, to, threadId, messageId, and uploadedAt or deletedAt. to is the address the file belongs to, or null for a file that belongs to the whole workspace.

The file events are not in the default set, so an endpoint receives them only when it names them in eventTypes. An endpoint limited to some addresses hears only about the files of those addresses, so an upload for the whole workspace, with to null, is not sent to it.

form.submitted fires when someone signs up through one of your forms, and form.confirmed when a pending sign-up joins the audiences, because the person opened the confirmation link or because you approved it. form.submitted carries FormSubmittedEventData: formId, formName, submissionId, email, status, answers, audienceIds, sourceUrl and submittedAt. form.confirmed carries FormConfirmedEventData: formId, formName, submissionId, email, audienceIds, via, which is link or approval, and confirmedAt.

A sign-up on a form without double opt-in sends form.submitted with status added and no form.confirmed, so treat that pair as the moment someone joins. Someone who signs up again before confirming keeps the same submissionId, and form.submitted fires again only when their answers changed. The form events are not in the default set, and an endpoint limited to some addresses never receives them, because sign-ups belong to the whole workspace.

Each of these data shapes is a TypedDict in openemail.types. Annotate a verified event as WebhookPayload[FileEventData], for example, and a type checker knows what event['data'] holds.

Proving it works

webhook_test.py

result = client.webhooks.test('whe_…')delivery = result['delivery'] if delivery is not None:    print(delivery['status'], delivery['responseCode']) for d in client.webhooks.iterate_deliveries('whe_…'):    print(d['eventType'], d['status'], d['responseCode'], d['error'])

A responseCode of None means there was no response at all (DNS, TLS, a timeout), which is a different fact from a response that said 0. Each row carries attempt and maxAttempts, so several rows can describe one event: the same eventId across them is the event, and the attempt number is the try. nextAttemptAt says when the automatic retry after a row is due.

Sending it again

webhook_replay.py

detail = client.webhooks.get_delivery('whe_…', 'whd_…')print(detail['payload'], detail['responseBody'], detail['replayRefusal']) replay = client.webhooks.replay_delivery('whe_…', 'whd_…')print(replay['delivery']['status'], replay['delivery']['responseCode'])

A delivery that keeps failing is tried up to 8 times: as it happens, then after 1 minute, 5 minutes, 30 minutes, 2 hours, 5 hours, 10 hours and 10 hours, about 27 and a half hours in all. Only a failure worth repeating is repeated: no answer, 408, 425, 429 or a 5xx. A replay sends the stored event again with the same id, type, createdAt and data, so a receiver that drops ids it has already handled treats it as the event it knows. Only the signature is new.

replay_delivery sends one event now and returns what your server answered. It works on a delivered attempt too and is never retried. Before it sends, the automatic retries of that event that have not started are paused: they stay cancelled when the replay is delivered, and resume on their schedule when it fails.
If an automatic retry of the same event is being sent at that moment, replay_delivery sends nothing and is refused with 409 retry_in_progress, and while another replay of it is still being sent it is refused with 409 replay_in_progress, so your receiver never gets two copies at once, even from two replays sent at the same instant. Wait a few seconds and read get_delivery, since that retry or replay may deliver it. Replay is one event at a time: no call sends every failed delivery again.
It also refuses with 409 a switched-off endpoint (webhook_disabled), an event the endpoint no longer listens for (event_not_subscribed) or no longer covers (event_out_of_scope), and an attempt with no stored event (delivery_not_replayable). get_delivery reports that answer in advance as replayRefusal.

The SDK never retries replay_delivery on its own, because a retry after a lost response would send the event again.

Each refusal raises OpenEmailApiError with status 409, is_conflict true and the reason as code, one of the values in WEBHOOK_REPLAY_ERROR_CODES.

Parameters: webhooks.create

urlstrrequired: Where deliveries are POSTed. HTTPS only, and the host may not be `localhost`, a `.localhost`/`.local`/`.internal` name, or a loopback, private, CGNAT or link-local IP literal. This is a server-side fetch to an address you supply, so those are a 422 on `url`; the check reads the hostname as written and never resolves DNS. What is stored is the URL parser's serialisation of what you sent, so `https://acme.com` reads back as `https://acme.com/`.
eventTypeslist[WebhookEvent]: Which events reach this endpoint: any of the names in `WEBHOOK_EVENTS`. `POST /webhooks` caps the array at the number of events that exist, so one more than that is a 422 on `eventTypes`; `PATCH` does not cap it. Only the length is capped, and a repeated name is stored and read back exactly as you sent it. Omitted or empty is stored as an empty list, which is why it reads back as `['*']`, and it means every `email.*` event except `email.replied`, fourteen today, and never the domain, suppression or file families. A family added later never reaches an endpoint that did not name it, so an integration cannot start receiving a shape it has never seen because of a release.
descriptionstr: A label for the endpoint, at most 200 characters, so a list of webhooks reads as names rather than a column of URLs. Omitted, it is stored and returned as null.

Response: CreatedWebhookResource

objectLiteral['webhook']: Always `'webhook'`, the same discriminator a plain read returns, because the secret is one extra key on the ordinary shape rather than an object type of its own. Whether `secret` is present is decided by which method you called, not by this field.
idstr: The endpoint's identifier: `whe_` followed by 24 hex characters. Every other webhook call takes it: `get`, `update`, `delete`, `rotate_secret`, `test`, `list_deliveries`, `list_all_deliveries`, `iterate_deliveries`, `get_delivery` and `replay_delivery`.
urlstr: The endpoint as stored, having passed the HTTPS and blocked-host checks. It is the parsed URL re-serialised, so compare against this value rather than against the string you sent.
descriptionstr | None: The label you gave it, or null if you gave none. An `update` that sends an explicit null clears it back to null.
eventTypeslist[WebhookEvent] | ['*']: The subscribed events, or `['*']` when the endpoint named none. `['*']` is how an empty stored list is rendered on read and cannot be sent back, and it stands for the fourteen message events rather than the whole catalogue. `create` and `update` accept only the literal event names.
enabledbool: Whether deliveries are attempted; a disabled endpoint is skipped when events are dispatched and keeps its secret and its delivery history. Always true here, since `WebhookCreate` has no `enabled` and only `WebhookPatch` does.
lastDeliveryAtstr | None: ISO 8601 timestamp of the last delivery ATTEMPT, not the last success. It is stamped after a failed POST too, so it tells you the endpoint was tried and `list_deliveries` tells you how it went. Null until the first attempt, and so always null on `create`.
createdAtstr: ISO 8601 timestamp of when the endpoint was registered. `list` returns endpoints newest first by this field.
secretstr: The HMAC-SHA-256 key that signs each delivery's `X-OpenEmail-Signature`: `whsec_` followed by 32 random bytes in base64url, and what you hand to `verify_webhook_signature`. Returned by `create` and `rotate_secret` and by nothing else. A read never echoes it, so store it now; a lost secret can only be replaced with `rotate_secret`, which invalidates the old one immediately.

Filtering the logs

webhook_logs.py

from datetime import datetime, timedelta, timezone failed = client.webhooks.list_workspace_deliveries(    status='failed',    since=datetime.now(timezone.utc) - timedelta(days=1),)print(len(failed['items'])) history = client.webhooks.list_activity('whe_…')print([(change['type'], change['actor']['label'] if change['actor'] else None) for change in history['items']])

list_deliveries reads one endpoint and list_workspace_deliveries every endpoint, or the ones endpoint_ids= names, and both take status=, since= and until=, the filters of the console’s Deliveries tab. list_activity and list_workspace_activity read the audit log: who created, changed, switched, rotated, tested, replayed or removed what. Each has a list_all_… and an iterate_… beside it, and every row of the workspace log carries endpointId.

since= and until= take a datetime or an ISO 8601 string. A naive datetime is read as local time and converted to UTC, so pass an aware one, as above.

Endpoints

Every method

What you can subscribe to

Proving it works

Sending it again

Parameters: webhooks.create

Response: CreatedWebhookResource

Filtering the logs

Reference

Your inbox,
on your own terms.

Endpoints

Every method

What you can subscribe to

Proving it works

Sending it again

Parameters: webhooks.create

Response: CreatedWebhookResource

Filtering the logs

Reference

Your inbox,on your own terms.

Your inbox,
on your own terms.