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Outreach Mailing API

## Mailing Relationships## Mailing Resource Metadata| **METADATA NAME**| **DESCRIPTION** | **QUERY PARAM** || --- | --- | --- || canWrite | A boolean value indicating whether the current API user has write access to this resource. | provideAuthorizationMeta || dataConnections | The set of connections a given Mailing has to external sources. | provideDataConnections |## ⌵ Mailing Actions

Outreach Mailing API is one of 55 APIs that Outreach publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 1 JSON Schema definition.

Tagged areas include Mailing. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, a getting-started guide, and 1 JSON Schema.

This API exposes 3 operations across 2 paths, and defines 3 schemas. It is described by OpenAPI 3.2.0.

Requests are made against a single base URL, https://api.outreach.io/api/v2.

3 operations 2 paths 3 schemas 2 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
Base URL
https://api.outreach.io/api/v2
Authentication
HTTP Bearer, HTTP Bearer
Resource Areas
1

Authentication & Security 2

Outreach Mailing API declares 2 security schemes for authenticating requests. It accepts HTTP bearer tokens (JWT) (bearerAuth). It accepts HTTP bearer tokens (JWT) (s2sAuthToken). By default, every request must be authenticated.

Paths & Operations 3

Across 2 paths, the API surfaces 3 operations — 2 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Mailing 3

Mailing Relationships Mailing Resource Metadata | METADATA NAME| DESCRIPTION | QUERY PARAM | | --- | --- | --- | | canWrite | A boolean value indicating whether the current API us…

GET
/mailings
Get a Collection of Mailings
→ 200422
POST
/mailings
Create a New Mailing
body → 201422
GET
/mailings/{id}
Get a Mailing by ID
1 param → 200404

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are mailing (34 properties), mailingRelationships (19 properties), mailingResponse (4 properties). Each schema is shown below with its type and property counts.

mailingResponse
object
4 properties
mailingRelationships
object
19 properties
mailing
object
A representation of a platform-related email.
34 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

outreach-mailing-api-openapi.yml Raw ↑

Other APIs Outreach publishes across the network.

Outreach MCP Server
Outreach Client Extensions API
Outreach Data Sharing
Outreach Webhooks
Outreach Account API
Outreach Account Note API
Outreach Audit Log API
Outreach Batch API
Outreach Batch Item API
Outreach Call API
Outreach Call Disposition API
Outreach Call Purpose API
Where this information came from

This is an independent, third-party profile of Outreach Mailing API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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