> ## Documentation Index > Fetch the complete documentation index at: https://docs.extole.com/llms.txt > Use this file to discover all available pages before exploring further. # Send Async > Sends this email to one person without waiting for identity resolution: the event is accepted immediately and resolved afterwards. Call it once per recipient - it takes one person, and exists for sending to many of them at volume from your own backend. ## OpenAPI ````yaml /feature-specific-apis/promotion-email.json post /v6/async-events/{event_name} openapi: 3.1.0 info: title: Promotion Email version: 1.0.0 description: >- Operations published by Extole Promotion Email components. Generated from the component contracts on my.extole.com. servers: - description: Production - Extole events host url: https://events.extole.io security: [] paths: /v6/async-events/{event_name}: post: tags: - ACTION summary: Send Async description: >- Sends this email to one person without waiting for identity resolution: the event is accepted immediately and resolved afterwards. Call it once per recipient - it takes one person, and exists for sending to many of them at volume from your own backend. operationId: send_async parameters: - name: event_name in: path required: true description: >- The event that triggers this email. Any of the events this email listens for sends it. schema: type: string enum: - generic_promotion_email_triggered requestBody: required: true content: application/json: schema: type: object required: - email properties: email: type: string format: email description: Email address of the person the event belongs to. partner_user_id: type: string description: Your own identifier for the person, when you have one. responses: '200': description: Success content: application/json: schema: type: object required: - event_id properties: event_id: type: string description: >- Unique identifier for the accepted event. Identity is resolved later, so no person is returned. '400': description: Bad Request content: application/json: schema: $ref: '#/components/schemas/RestExceptionResponse' examples: binding_error: $ref: '#/components/examples/binding_error' invalid_json: $ref: '#/components/examples/invalid_json' invalid_parameter: $ref: '#/components/examples/invalid_parameter' missing_request_body: $ref: '#/components/examples/missing_request_body' '403': description: Forbidden content: application/json: schema: $ref: '#/components/schemas/RestExceptionResponse' examples: access_denied: $ref: '#/components/examples/access_denied' method_unauthorized: $ref: '#/components/examples/method_unauthorized' missing_access_token: $ref: '#/components/examples/missing_access_token' security: - HEADER: [] - QUERY_PARAM: [] servers: - description: Production - Extole events host url: https://events.extole.io components: schemas: RestExceptionResponse: type: object description: Represents the API error response properties: code: type: string description: Specific error code for this error type, documented per endpoint http_status_code: type: integer description: >- HTTP status code that was returned with this error, useful if client get response code message: type: string description: User readable English description of the error parameters: type: object description: >- Attributes related to the error, varies be error code, documented per endpoint additionalProperties: type: object description: >- Attributes related to the error, varies be error code, documented per endpoint unique_id: type: string description: >- Unique id associated with this error, useful for discussions with Extole required: - code - http_status_code - message - parameters - unique_id examples: binding_error: summary: binding_error value: unique_id: 00000000-0000-0000-0000-000000000000 http_status_code: 400 code: binding_error message: Argument is not of the expected type parameters: {} invalid_json: summary: invalid_json value: unique_id: 00000000-0000-0000-0000-000000000000 http_status_code: 400 code: invalid_json message: JSON is invalid parameters: {} invalid_parameter: summary: invalid_parameter value: unique_id: 00000000-0000-0000-0000-000000000000 http_status_code: 400 code: invalid_parameter message: Parameter is invalid. parameters: {} missing_request_body: summary: missing_request_body value: unique_id: 00000000-0000-0000-0000-000000000000 http_status_code: 400 code: missing_request_body message: Missing request body parameters: {} access_denied: summary: access_denied value: unique_id: 00000000-0000-0000-0000-000000000000 http_status_code: 403 code: access_denied message: >- The access_token provided is not permitted to access the specified resource. parameters: {} method_unauthorized: summary: method_unauthorized value: unique_id: 00000000-0000-0000-0000-000000000000 http_status_code: 403 code: method_unauthorized message: Access forbidden to this endpoint parameters: {} missing_access_token: summary: missing_access_token value: unique_id: 00000000-0000-0000-0000-000000000000 http_status_code: 403 code: missing_access_token message: No access_token was provided with this request. parameters: {} securitySchemes: HEADER: type: apiKey in: header name: Authorization description: >- A client access token, issued to your Extole account and used from your own backend. Never send a client token from a consumer device. x-bearer-format: bearer QUERY_PARAM: type: apiKey in: query name: access_token description: >- A client access token, issued to your Extole account and used from your own backend. Never send a client token from a consumer device. ```` ## Related topics - [Send Now](/api-reference/feature-specific/promotion-email/action/send-now.md) - [Send Events from the Partner Platform](/technical/building-partner-integrations/integration-types/partner-events-send-from-platform.md) - [REST APIs](/technical/platform-integrations/rest-apis/index.md) - [Submit an event asynchronously](/api-reference/events/submit-an-event-asynchronously.md) - [Asynchronous Reporting API](/technical/platform-integrations/rest-apis/asynchronous-reporting-api.md)