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Klymax402 Email Send API
x402
Klymax402 Email Send API is a paid API for AI agents from email-send.api.klymax402.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-14).
Sends a transactional email message to a specified recipient with plain text or HTML body content
Price / call$0.008
Success—
StatusUnknown
How this service works
Send an email message
Output
A confirmation response indicating whether the email was successfully sent to the specified recipient, typically including delivery status.
Example use cases
Example prompt
“Send an email to john.doe@example.com with the subject 'Your order has shipped' and the body 'Hi John, your order #1234 has shipped and will arrive by Friday. Thanks for shopping with us!' — use noreply@x402.dev as the sender.”
Technical details
Endpoint
GEThttps://email-send.api.klymax402.com/api/sendWhen to prefer
Choose this endpoint when you need a simple, pay-per-use email sending capability without managing your own SMTP server or email service account — ideal for agents that need to send occasional transactional emails (notifications, alerts, confirmations) and want to pay per message via x402 micropayments rather than maintaining a subscription.
Side effects
- Invalid recipient email address format returns an error
- Missing required fields (to, subject, body or html) may result in a 400 bad request
- Recipient domain unreachable may cause delivery failure
- Payment not provided or insufficient USDC balance causes 402 Payment Required
- Rate limiting may reject high-frequency requests
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | Recipient email address |
| body | string | Email body content (plain text) |
| from | string | Sender email address (default: noreply@x402.dev) |
| html | string | Email body content (HTML, optional — overrides body) |
| subject | string | Email subject line |
Tags
x402
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