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Prerequisites

Before you start, ensure you have:
  • A Lettermint account (sign up here if needed)
  • A verified sending domain
  • Your API token from the Lettermint dashboard

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Step 1: Get Your API token

  1. Log into your Lettermint dashboard
  2. Navigate to Projects → [Your Project] → API token
  3. Copy your API token (keep this secure)

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Step 2: Send Your First Email

Choose your preferred method: 
  curl -X POST https://api.lettermint.co/v1/send \
    -H "Authorization: Bearer YOUR_API_KEY" \
    -H "Content-Type: application/json" \
    -d '{
      "from": "hello@yourdomain.com",
      "to": "recipient@example.com",
      "subject": "Hello from Lettermint",
      "html": "<h1>Welcome!</h1><p>Your first email via Lettermint.</p>",
      "text": "Welcome! Your first email via Lettermint."
    }'
Lettermint does not have a rate limit on its sending API. This way, you literally do not have to care about anything other than sending email.

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Step 3: Check your emails

Go to the Emails overview in your dashboard and voilà, your first email should be delivered.

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Next Steps

Now that you’ve sent your first email: Need help? Create a support ticket in your dashboard support page or check the API Reference for detailed endpoint documentation.