HubSpot Single Send API
Send individual transactional emails using templates
HubSpot Single Send API is one of 93 APIs that HubSpot publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
This API exposes 652 JSON Schema definitions.
Tagged areas include Single Send. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, code examples, and 652 JSON Schemas.
This API exposes 1 operation across 1 path, and defines 5 schemas. It is described by OpenAPI 3.1.0, at version 3.0.0.
Requests are made against a single base URL, https://api.hubapi.com.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
HubSpot Single Send API declares
1 security scheme
for authenticating requests.
It supports OAuth 2.0 (OAuth2) using the authorizationCode flow, exposing 1 scope.
Paths & Operations 1
Across 1 path, the API surfaces 1 operation — 1 POST. Each is listed below with its method, path, parameters, and response codes.
Send individual transactional emails using templates
Schemas 5
The contract defines 5 schemas that model the data the API accepts and returns. The most detailed are Error (7 properties), EmailMessage (6 properties), TransactionalEmailResponse (6 properties), ErrorDetail (5 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
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Other APIs HubSpot publishes across the network.