How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Sendoso Sends API

Create and retrieve gift, direct mail and eGift sends.

Sendoso Sends API is one of 8 APIs that Sendoso publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Sends. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, a getting-started guide, authentication docs, and rate-limit docs.

This API exposes 3 operations across 2 paths, and defines 6 schemas. It is described by OpenAPI 3.2.0, at version 3.

Requests are made against 2 base URLs: https://app.sendoso.com, https://app.staging.sendo.so.

3 operations 2 paths 6 schemas 1 GET2 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
3
Base URL
https://app.sendoso.com/api/v3
Authentication
OAuth 2.0
Resource Areas
1

Authentication & Security 1

Sendoso Sends API declares 1 security scheme for authenticating requests. It supports OAuth 2.0 (OAuth2) using the authorizationCode flow, exposing 5 scopes. By default, every request must be authenticated.

  • OAuth2 — OAuth 2.0 Authorization Code grant. Register your application by contacting developers@sendoso.com to receive a client ID and client secret. Access tokens live…

Paths & Operations 3

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

Sends 3

Create and retrieve gift, direct mail and eGift sends.

GET
/api/v3/send
Retrieve All Sends
getSends 2 params → 200401429
POST
/api/v3/send
Create a Send
createSend body → 200400401404429
POST
/api/v3/send/generate_egift_links
Generate eGift Links
generateEgiftLinks body → 200400401404429

Schemas 6

The contract defines 6 schemas that model the data the API accepts and returns. The most detailed are PhysicalSendRequest (13 properties), PhysicalSendAddressCollectionRequest (13 properties), Send (6 properties), EgiftSendRequest (6 properties). Each schema is shown below with its type and property counts.

Error
object
Sendoso's error envelope. Not RFC 9457 problem+json — errors are returned as application/json with a success flag and a human-readable message. Some documented…
4 properties
PhysicalSendAddressCollectionRequest
object
Send a physical item when the recipient address is unknown.
13 properties 11 required
EgiftSendRequest
object
Send an eGift directly to a recipient.
6 properties 4 required
SendResult
object
4 properties 3 required
Send
object
6 properties 6 required
PhysicalSendRequest
object
Send a physical item directly to a recipient when their address is known.
13 properties 11 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

sendoso-sends-api-openapi.yml Raw ↑

Other APIs Sendoso publishes across the network.

Sendoso Marketplace and SmartSend API
Sendoso Webhooks
Sendoso MCP Server
Sendoso Campaigns API
Sendoso Smart Send API
Sendoso Teams API
Sendoso Users API
Where this information came from

This is an independent, third-party profile of Sendoso Sends 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.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.