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How to Find Your Instantly API Key

Last updated April 1, 2026

Your Instantly API key lets you programmatically manage email campaigns, leads, and account settings. Here's how to find it.

Step 1: Open Settings

  1. Log in to app.instantly.ai
  2. Click the Settings icon (gear) in the left sidebar
  3. Click Integrations

Step 2: Copy Your API Key

  1. Scroll to the API section
  2. Your API key is displayed there
  3. Click the copy icon to copy it

If you don't see an API key, click Generate to create one.

What Can You Do with the Instantly API?

  • Manage campaigns: Create, pause, and resume email campaigns
  • Add leads: Upload leads to your campaigns programmatically
  • Track analytics: Get campaign performance metrics
  • Manage accounts: Control sending accounts and warmup settings

API Access Requirements

The Instantly API is available on paid plans. If you're on the free plan or don't see the API section, you may need to upgrade your subscription.

Troubleshooting

"Invalid API key" error

  • Make sure you copied the complete API key
  • Verify the key hasn't been regenerated (old keys become invalid)
  • Check that your Instantly subscription includes API access

"Rate limit exceeded" error

  • The API has rate limits to prevent abuse
  • Wait a few minutes before retrying
  • Consider batching your requests

Automate Your Cold Email Workflows

Once you have your API key, you can connect Instantly to Miniloop to automate lead uploads, campaign management, and email sequences using natural language. Describe your outreach goals, and Miniloop handles the rest.

Frequently Asked Questions

Which Instantly plans include API access?

API access is typically available on Growth and higher plans. Check your subscription details in Instantly settings or contact their support for current API availability.

Can I regenerate my API key?

Yes, you can regenerate your API key in Settings > Integrations. Note that regenerating will invalidate your old key, so update it in any connected applications.

What are the API rate limits?

Instantly has rate limits that vary by endpoint and plan. Check their API documentation for specific limits, or implement exponential backoff in your integration.

How do I revoke API access?

Regenerate your API key in Settings > Integrations. This will invalidate the old key and create a new one.