Customer.io

Customer.io Email testing API

Check an email before you publish or send it. - [Render](/integrations/api/design-studio/tag/email-testing/renderEmail/) returns the compiled HTML with liquid left intact. - [Preview](/integrations/api/design-studio/tag/email-testing/previewEmail/) evaluates liquid against a real profile or sample data. - [Review](/integrations/api/design-studio/tag/email-testing/reviewEmail/) reports issues that could stop the email from sending or breach compliance standards. - [Test send](/integrations/api/design-studio/tag/email-testing/testSendEmail/) delivers the email to addresses you choose. - **Inbox previews** render the email in real email clients. [Submit a job](/integrations/api/design-studio/tag/email-testing/submitInboxPreview/), poll it, then fetch each capture. Inbox previews use credits; check your balance and the available clients with the account-level endpoints in this section.

GitHub OpenAPI

Operations 10

GET /v1/design_studio/emails/{id}/render Render an email #
POST /v1/design_studio/emails/{id}/preview Preview an email #
POST /v1/design_studio/emails/{id}/test_send Send a test email #
GET /v1/design_studio/emails/{id}/review Review an email #
GET /v1/design_studio/inbox_previews/clients List inbox preview options #
GET /v1/design_studio/inbox_previews/credits Get preview credit balance #
POST /v1/design_studio/emails/{id}/inbox_previews Send for inbox previews #
GET /v1/design_studio/emails/{id}/inbox_previews/{run_id} Get an inbox preview job #
GET /v1/design_studio/emails/{id}/inbox_previews/{run_id}/captures/{client_id} Get a preview screenshot #
GET /v1/design_studio/inbox_previews/jobs List inbox preview history #

Documentation

📖
Documentation
https://docs.customer.io/integrations/api/app/
📖
Documentation
https://docs.customer.io/integrations/data-in/connections/http-api/
📖
Documentation
https://docs.customer.io/integrations/api/customerio-apis/

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/customer-io/refs/heads/main/openapi/customer-io-email-testing-api-openapi.yml

Schemas & Data

📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/customer-io/refs/heads/main/json-schema/customer-io-campaign-object-schema.json
📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/customer-io/refs/heads/main/json-schema/customer-io-transformers-schema.json
📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/customer-io/refs/heads/main/json-schema/customer-io-campaign-request-schema.json
📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/customer-io/refs/heads/main/json-schema/customer-io-newsletter-object-schema.json
📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/customer-io/refs/heads/main/json-schema/customer-io-activity-object-schema.json
📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/customer-io/refs/heads/main/json-schema/customer-io-anonymous-events-request-schema.json

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OpenAPI Specification

customer-io-email-testing-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  version: 1.0.0
  title: Customer.io Journeys API Reference Email testing API
  description: Customer.io provides REST APIs to send real-time customer data, retrieve data from your account, and trigger messages.
servers:
- url: https://track.customer.io
  description: The base URL for the Track API. Track endpoints use basic authentication with your Site ID as the user name and your secret key as the password.
- url: https://track-eu.customer.io
  description: The base URL for the Track API (EU region). Track endpoints use basic authentication with your Site ID as the user name and your secret key as the password.
- url: https://api.customer.io
  description: The base URL for broadcasts, transactional messages, and data-retrieval APIs. These endpoints use bearer authorization, and require a [token that you generate in the UI](https://fly.customer.io/settings/api_credentials?keyType=app).
- url: https://api-eu.customer.io
  description: The base URL for broadcasts, transactional messages, and data-retrieval APIs (EU region). These endpoints use bearer authorization, and require a [token that you generate in the UI](https://fly.customer.io/settings/api_credentials?keyType=app).
tags:


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# Full source: https://raw.githubusercontent.com/api-evangelist/customer-io/refs/heads/main/openapi/customer-io-email-testing-api-openapi.yml