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  • Back to Website
  • Pricing
Logo IGSendMail Logo IGSendMail
  • Back to Website
  • Pricing
  • API Reference
    • Subscribers API
    • API Authentication
    • Campaigns API
    • Webhooks Guide
    • Transactional Email API
  • Email Campaigns
    • A/B Testing Campaigns
    • Scheduling and Send Time Optimization
    • Using the Drag-and-Drop Editor
    • Creating Campaigns
  • Deliverability
    • Spam Score Checker
    • Setting Up Domain Authentication
    • Bounce Management
    • Dedicated IP Addresses
  • Getting Started
    • Understanding Plans and Limits
    • What is IGSendMail?
    • Sending Your First Campaign
    • Platform Overview
    • Creating Your Account
    • Importing Contacts
  • Automation
    • Building Automation Workflows
    • Welcome Series Setup
    • Abandoned Cart Recovery
    • Automation Overview
  • Account & Billing
    • Billing and Invoices
    • GDPR Compliance Tools
    • Managing Your Account
  • Lists & Subscribers
    • Creating and Managing Lists
    • Subscriber Management
    • Segmentation
    • Signup Forms and Popups
    • List Hygiene and Cleaning
  1. Overview
  2. 🔌 API Reference
  3. API Authentication

API Authentication

Bearer Token

Authorization: Bearer YOUR_API_KEY

Get key: Settings → API Keys → Generate.

Rate Limits

  • Free: 100/min
  • Starter: 500/min
  • Professional: 2,000/min
  • Business: 10,000/min

Errors

401 (invalid key), 403 (insufficient permissions), 429 (rate limited).


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