Customer.io

Customer.io Newsletter Metrics API

Newsletter metrics include metrics for translations, A/B tests, and links. These endpoints return information about newsletter metrics including metrics for translations and A/B tests. You can update variants in newsletters from these endpoints, but you must perform all other create, update, and/or delete operations through the UI.

GitHub OpenAPI

Operations 5

Each operation below carries the questions people ask an LLM about it and the instructions they give an agent to run it. Generated by API Evangelist overlay

GET /v1/newsletters/{newsletter_id}/metrics Get newsletter metrics over time · Get newsletter metrics #
Ask an LLM
“How many opens and clicks did my newsletter get each day?”
“Can I see a newsletter's metrics in weekly steps?”
Tell an agent
Get metrics for newsletter {newsletter_id} by {period}.
Show the last {steps} periods of metrics for newsletter {newsletter_id}.
GET /v1/newsletters/{newsletter_id}/messages List deliveries sent by a newsletter · Get delivery data for a newsletter #
Ask an LLM
“Who received my newsletter and did they open it?”
“Can I list only the newsletter deliveries that bounced?”
Tell an agent
List deliveries for newsletter {newsletter_id}.
Show newsletter {newsletter_id} deliveries with metric {metric}.
GET /v1/newsletters/{newsletter_id}/contents/{content_id}/metrics Get metrics for a newsletter variant · Get metrics for a test or translation variant of a newsletter #
Ask an LLM
“How did variant B of my newsletter A/B test perform?”
“Can I see metrics for just the Spanish version of a newsletter?”
Tell an agent
Get metrics for variant {content_id} of newsletter {newsletter_id}.
Show newsletter {newsletter_id} variant {content_id} metrics by {period}.

Documentation

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

Specifications

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

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OpenAPI Specification

customer-io-newsletter-metrics-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  version: 1.0.0
  title: Customer.io App Newsletter Metrics API
  description: Our App API provides ways to trigger messages and retrieve information about people, campaigns, broadcasts, and more.
servers:
- 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-newsletter-metrics-api-openapi.yml