Mailsac

API

Freemium disposable email API for testing and development workflows

Overview

Mailsac API provides RESTful access to disposable email addresses for testing and automation. Key endpoints include creating temporary inboxes (/addresses), listing messages for an inbox (/addresses/{address}/messages), retrieving full message details (JSON format) with headers, plain text/HTML content, and attachments (/messages/{messageId}). It supports checking delivery status and deleting messages. Ideal use cases: testing email notifications, password reset flows, user onboarding, and validating transactional emails without personal accounts. Responses are JSON-structured, enabling seamless integration with test tools like Cypress or Postman.

Example Integration (JavaScript)

script.js JS


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

Key Features

RESTful API
JSON Responses
Disposable Inbox Creation
Email Content Retrieval
Attachment Handling
Custom Domain Support (Paid)

Frequently Asked Questions

? Is Mailsac free to use?

Yes, Mailsac offers a free tier with limited requests and inbox storage. Paid tiers unlock higher limits, custom domains, and advanced features.

? Does it require an API Key?

Yes, most endpoints require an API key, which you can obtain by signing up for a free account on Mailsac's website.

? What is the response format?

All API responses are in JSON format, including message lists, email content, and attachment metadata.

Top Alternatives

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Tool Info

Pricing Freemium

Category Test Data

Platform Public API

Pros

⊕ Easy integration with test automation tools
⊕ Free tier for basic testing needs
⊕ Supports attachment download
⊕ No personal email required for testing

Cons

⊖ Rate limits on free tier
⊖ API key required for full access
⊖ Limited inbox capacity in free plan
⊖ No SLA for non-paid users