Mailchimp

API

API for marketing campaigns and transactional email automation

Overview

The Mailchimp API is a RESTful interface enabling developers to automate email marketing workflows—including creating/sending campaigns, managing audience lists, delivering transactional emails, and accessing performance analytics. It uses JSON for all request/response formats. Key endpoints cover campaign scheduling, audience segmentation, contact syncing, transactional email delivery (via Mailchimp Transactional Email), and real-time reporting on opens/clicks. Use cases include integrating with e-commerce platforms, automating onboarding sequences, and syncing CRM data to Mailchimp for targeted outreach.

Example Integration (JavaScript)

script.js JS


fetch('https://mailchimp.com/developer/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful Architecture
JSON Support
OAuth 2.0 & API Key Auth
Campaign Management
Audience Segmentation
Transactional Email
Real-Time Reporting
Webhook Integration

Frequently Asked Questions

? Is Mailchimp API free to use?

The Mailchimp API is free within your plan limits. Free plans have restricted API calls/features, while paid plans offer higher limits and full access to advanced tools like transactional emails.

? Does it require an API Key?

Yes—authenticate via API keys (server-side apps) or OAuth 2.0 (client-side apps needing user authorization).

? What is the response format?

All Mailchimp API responses are in JSON format, lightweight and easy to parse for most programming languages.

Top Alternatives

SendGrid API Search Google

HubSpot Email API Search Google

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Tool Info

Pricing Freemium

Category Business

Platform Public API

Pros

⊕ Comprehensive Marketing Tools
⊕ Detailed Documentation
⊕ Scalable for All Business Sizes
⊕ Wide Third-Party Integrations
⊕ Advanced Analytics

Cons

⊖ Plan-Dependent Rate Limits
⊖ Paid Plans for Advanced Features
⊖ Steep Learning Curve for Complex Workflows
⊖ Occasional API Update Disruptions