Send emails.
Pay per email.
No subscriptions.

The simplest email API for developers. Starting at $0.001 per email. Perfect for startups, side projects, and AI agents.

Get API Key Free → See Demo
Send your first email 
curl -X POST https://api.mailerastro.com/api/v1/email/send \
  -H "X-API-Key: ae_live_your_key_here" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "user@example.com",
    "subject": "Hello!",
    "text": "Welcome to our service!"
  }'
-H "X-API-Key: ae_live_your_key_here" \ -H "Content-Type: application/json" \ -d '{ "to": "user@example.com", "subject": "Hello!", "text": "Welcome to our service!" }'

Simple Pricing

No monthly fees. Pay only for what you send.

Basic

$0.001

per email

  • ✓ Plain text emails
  • ✓ Single recipient
  • ✓ API access

Standard

$0.005

per email

  • ✓ HTML emails
  • ✓ Attachments
  • ✓ Up to 5 recipients
Popular

Premium

$0.01

per email

  • ✓ Priority delivery
  • ✓ Open tracking
  • ✓ Click tracking

Bulk

$0.0005

per email

  • ✓ 100+ emails
  • ✓ Batch sending
  • ✓ Best value
💰

No Minimums

Send 1 email or 1 million. Pay only for what you use.

🤖

AI-Native

x402 payments let AI agents pay autonomously with crypto.

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Fast Setup

Get your API key in 30 seconds. No credit card required.

Ready to send emails?

Get started in under a minute. No credit card required.

Create Free Account →