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Litmus Previews API

Email preview generation and management

Litmus Previews API is one of 6 APIs that Litmus publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Previews. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and authentication docs.

This API exposes 3 operations across 3 paths, and defines 4 schemas. It is described by OpenAPI 3.2.0, at version 1.0.0.

Requests are made against a single base URL, https://instant-api.litmus.com/v1.

3 operations 3 paths 4 schemas 2 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0.0
Base URL
https://instant-api.litmus.com/v1
Authentication
HTTP Bearer
Terms of Service
Resource Areas
1

Authentication & Security 1

Litmus Previews API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (bearerAuth). By default, every request must be authenticated.

  • bearerAuth — OAuth 2.0 access token obtained via the Litmus OAuth flow

Paths & Operations 3

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

Previews 3

Email preview generation and management

POST
/emails
Litmus Create an email preview
createEmailPreview body → 201400401
GET
/emails/{emailGuid}
Litmus Get email preview
getEmailPreview 1 param → 200401404
GET
/emails/{emailGuid}/previews/{clientId}
Litmus Get client preview screenshot
getClientPreview 2 params → 200401404

Schemas 4

The contract defines 4 schemas that model the data the API accepts and returns. The most detailed are CreateEmailPreviewRequest (5 properties), EmailPreview (5 properties), ClientPreview (5 properties), Error (2 properties). Each schema is shown below with its type and property counts.

Error
object
An API error response
2 properties 1 required
ClientPreview
object
Rendered preview result for a single email client
5 properties
EmailPreview
object
An email preview with rendering results across email clients
5 properties
CreateEmailPreviewRequest
object
Request body for creating an email preview
5 properties 2 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

litmus-previews-api-openapi.yml Raw ↑

Other APIs Litmus publishes across the network.

Litmus Analytics API
Litmus Campaigns API
Litmus Clients API
Litmus Results API
Litmus Tests API
Where this information came from

This is an independent, third-party profile of Litmus Previews 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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