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Last updated: 8 Jan 2024

email-alert-api: Available endpoints

Application

GET /subscriber-lists?tags[organisation]=cabinet-office

Gets a stored subscriber list that's relevant to just the cabinet-office organisation, in the form:

{
  "subscriber_list": {
    "id": "an id",
    "title": "Title of topic",
    "gov_delivery_id": "123",
    "document_type": "",
    "content_id": "",
    "created_at": "20141010T12:00:00",
    "updated_at": "20141010T12:00:00",
    "tags": {
      "any": {
        "topics": ["topic-slug"],
      }
    }
  }
}

Returns a 404 Not Found if there is no such list.

POST /subscriber-lists

{
  "title": "My title",
  "tags": {
    "any": {
      "organisations": ["my-org"],
    }
  }
}

It will respond with the JSON response for the GET call above.

The following fields are accepted:

  • title: The title of this particular list, which will be shown to the user; email sent to a user;
  • url: A url to a page that reflects what the user signed up to and can be linked to with their list;
  • links: An object where keys are a link type and the value is an object containing a key of "any" or "all" associated with an array of link values, this is used to match content changes and messages to the list;
  • tags: An object where keys are valid tags and the value is an object containing a key of "any" or "all" associated with an array of link values this is used to match content changes and messages to the list;
  • document_type: A field that can be used to match with content changes that share the corresponding field;
  • email_document_supertype: A field that can be used to match with content changes that share the corresponding field;
  • government_document_supertype: A field that can be used to match with content changes that share the corresponding field.
  • content_id: A field that can be used to match with a single content item for subscriptions to individual pages or pieces of guidance.

GET /subscriber-lists/xxx

Gets the stored subscriber list with the given ID.

It will respond with the JSON response for the GET call above.

Returns a 404 Not Found if there is no such list.

GET /subscriber-lists/metrics/*path

Looks for a subscriber list with a matching path and returns the active subscriber list count (or 0 if the list is empty or does not exist), and performs a content change query on the path and also returns that value (or 0 if the path doesn't generate email alerts or there are no subscribers):

{
  "subscriber_list_count": 12,
  "all_notify_count": 26
}

Always returns 200.

PATCH /subscriber-lists/xxx

Update data that helps describe the subscriber list, such as the title. It requires at least one parameter to update.

{
  "title": "A new Subscriber list title",
  "description": "A new subscriber list description",
}

The following fields are accepted:

  • title: The title of this particular list, which will be shown to the user; email sent to a user;
  • description: A description of the content this list represents, used by email-alert-service to construct emails when a page is unpublished.

Any additional parameters will be ignored.

Returns a 200 OK with the details of the subscriber list including the new parameters, for an acceptable request.

Returns a 404 Not Found if there is no such list.

Returns a 422 Bad Request if no allowed parameters are provided to update.

POST /subscriber-lists/xxx/bulk-unsubscribe

Unsubscribes all subscribers from that list, and optionally sends an email to them.

{
  "sender_message_id": "bfeee5a9-20c2-44ec-8162-f14dde721c21",
  "body": "Message body here"
}

The following fields are accepted on this endpoint: sender_message_id, body.

It will respond with 202 Accepted (the call is queued). When it is processed, all users then-subscribed to the list will be sent an immediate email (if the body is given) and be unsubscribed.

Returns a 422 Unprocessable Entity if body is given but sender_message_id is not.

Returns a 409 Conflict if sender_message_id has already been used.

Returns a 404 Not Found if there is no such list.

POST /content-changes

{
  "subject": "This is the subject/title of my bulletin",
  "body": "Email body here",
  "tags": {
    "tag": {
      "any": ["values"]
    }
  }
}

It will respond with 202 Accepted (the call is queued to prevent slowness in the external notifications API).

The following fields are accepted on this endpoint: subject, from_address_id, urgent, header, footer, document_type, content_id, public_updated_at, publishing_app, email_document_supertype, government_document_supertype, title, description, change_note, base_path, priority and footnote.

POST /messages

{
  "sender_message_id": "4da7a6a7-c8f7-482e-aeb9-a26cea90780c",
  "title": "Message title",
  "body": "Message body",
  "criteria_rules": [
    { "type": "tag", "key": "tag-name", "value": "tag-value" }
  ]
}

It will respond with 202 Accepted (the call is queued).

The following fields are accepted on this endpoint: sender_message_id, title, url, body, criteria_rules, and priority.

GET /subscribers/xxx/subscriptions

Gets a subscriber's subscriptions, in the form:

{
  "subscriber": {
    "id": 1,
    "address": "test@example.com",
    "created_at": "Wed, 07 Mar 2018 17:04:28 UTC +00:00",
    "updated_at": "Wed, 07 Mar 2018 17:04:28 UTC +00:00",
    "signon_user_uid": null
  },
  "subscriptions": [
    {
      "subscriber_id": 1,
      "subscriber_list_id": 4232,
      "created_at": "Wed, 07 Mar 2018 18:52:25 UTC +00:00",
      "updated_at": "Wed, 07 Mar 2018 18:52:25 UTC +00:00",
      "frequency": "daily",
      "signon_user_uid": null,
      "id": "476e1439-f5ba-4d7a-b4aa-1090563c5c36",
      "source": "imported",
      "ended_at": null,
      "ended_reason": null,
      "subscriber_list": {
        "id": 4232,
        "title": "All types of document about all topics by Foreign & Commonwealth Office",
        "created_at": "Thu, 01 Aug 2013 12:53:34 UTC +00:00",
        "updated_at": "Tue, 13 Mar 2018 15:11:29 UTC +00:00",
        "document_type": "",
        "content_id": "",
        "tags": {},
        "links": {
          "organisations": ["9adfc4ed-9f6c-4976-a6d8-18d34356367c"]
        },
        "email_document_supertype": "",
        "government_document_supertype": "",
        "signon_user_uid": null,
        "slug": "all-types-of-document-about-all-topics-by-foreign-commonwealth-office"
      }
    }
  ]
}

PATCH /subscribers/xxx

{
  "new_address": "test2@example.com"
}

It will respond with the details of the subscriber including the new email address.

  • DELETE /subscribers/xxx - unsubscribes a provided subscriber and returns 204 No Content.

  • POST /subscriptions with data:

{
  "address": "email@address.com",
  "subscriber_list_id": "The id of a subscriber list",
  "frequency": "weekly"
  "skip_confirmation_email": true (optional)
}

It will create a new subscription between the email address and the subscriber list. If a subscription already exists but the frequency is different, the current subscription is ended and a new one with the updated frequency is created. It will respond with the details of the subscription.

A confirmation email will be sent unless the "skip_confirmation_email" flag is set (e.g. if the calling app is going to send it's own confirmation email).

Note: using any email address that ends with @notifications.service.gov.uk will not create a subscriber or a subscription, however will return a 201 Created response.

PATCH /subscriptions/xxxx

{
  "frequency": "weekly"
}

It will respond with the details of the subscription including the new frequency.

POST /unsubscribe/xxx

Unsubscribes a subscriber from the provided subscription and returns 204 No Content.

POST /subscribers/auth-token

{
  "address": "test@example.com",
  "destination": "/authentication-page-on-govuk",
  "redirect": "/page-user-wanted-on-govuk",
}

This will trigger an email to the address specified with a link to the destination with a query string of token and a JWT token. Returns a 201 status code on success; a 403 status code if the subscriber is linked to a GOV.UK Account; or a 404 status code if the subscriber is not known to Email Alert API.

POST /subscribers/govuk-account

{
  "govuk_account_session": "session-token-from-account-header"
}

Checks if the given GOV.UK account has a verified email address which matches a subscriber and, if so, returns the subscriber in the form

{
  "subscriber": {
    "id": 1,
    "address": "test@example.com",
    "created_at": "Wed, 07 Mar 2018 17:04:28 UTC +00:00",
    "updated_at": "Wed, 07 Mar 2018 17:04:28 UTC +00:00",
  }
}

Returns a 401 if the account session identifier is invalid.

Returns a 403 if the account's email address is not verified.

The 403 and 200 responses may optionally have a govuk_account_session response field, which should replace the value in the user's session.

POST /subscribers/govuk-account/link

{
  "govuk_account_session": "session-token-from-account-header"
}

Looks up a GOV.UK Account and finds or creates a subscriber (in the same way as POST /subscribers/govuk-account), and stores the GOV.UK Account ID against the subscriber record. Returns the subscriber in the form:

{
  "subscriber": {
    "id": 1,
    "govuk_account_id": "user-id",
    "address": "test@example.com",
    "created_at": "Wed, 07 Mar 2018 17:04:28 UTC +00:00",
    "updated_at": "Wed, 07 Mar 2018 17:04:28 UTC +00:00",
  }
}

If the subscriber was not previously linked to a GOV.UK account, they are sent an email listing the active subscriptions which they can now manage through their account. If they had no active subscriptions, no email is sent.

Returns a 401 if the account session identifier is invalid.

Returns a 403 if the account's email address is not verified.

The 403 and 200 responses may optionally have a govuk_account_session response field, which should replace the value in the user's session.

GET /subscribers/govuk-account/:id

Looks for a subscriber with a matching GOV.UK Account ID (as previously set by POST /subscribers/govuk-account/link) and, if there is one, returns it in the form:

{
  "subscriber": {
    "id": 1,
    "govuk_account_id": "user-id",
    "address": "test@example.com",
    "created_at": "Wed, 07 Mar 2018 17:04:28 UTC +00:00",
    "updated_at": "Wed, 07 Mar 2018 17:04:28 UTC +00:00",
  }
}

Returns a 404 if there is no matching subscriber.

Healthcheck

A queue health check endpoint is available at /healthcheck.

{
  "checks": {
    "queue_size": {
      "status": "ok"
    },
    "queue_age": {
      "status": "ok"
    }
  },
  "status": "ok"
 }