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MailerLite API

Email Free key (no card)

AuthenticationFree key (no card)
Rate limitFree; 120 requests per minute across the API.

Documentation: developers.mailerlite.com ยท Checked Sep 13, 2026

About

MailerLite's REST API covers subscribers, campaigns, automations, forms, and segments. You create a token in your account and call a clean, well-documented API. The free plan has shrunk over time, so check the current subscriber and send limits on their pricing page, but API access itself is available without paying. A solid pick for newsletter signup flows and drip campaigns.

Details

Free to start. You may need a free key, but no credit card.

Auth: Free key (no card)

Rate limit: Free; 120 requests per minute across the API.

Verified: 2026-09-13

Best for: email marketing newsletters automation

Read the docs Back to catalog

Setup

  1. Create a free MailerLite account and complete the approval steps
  2. Go to Integrations, then Developer API, and create a token
  3. Test listing subscribers to confirm the token works
  4. Add new subscribers from your signup forms via the API
  5. Trigger automations or add subscribers to groups as needed
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