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httpay.xyz SendGrid Email Delivery Gateway
x402
httpay.xyz SendGrid Email Delivery Gateway is a paid API for AI agents from httpay.xyz, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Proxies the SendGrid v3 mail/send API to deliver transactional and marketing emails, with per-call micropayment billing via x402.
Price / call$0.001
Success—
StatusUnknown
How this service works
API Gateway: SendGrid email delivery API
Output
Returns a SendGrid API response with HTTP 202 Accepted on success and a message ID, or an error object describing delivery failures, invalid addresses, or authentication issues.
Example use cases
Example prompt
“Send a transactional email via SendGrid from noreply@myapp.com to user@example.com with the subject 'Your order has shipped' and the HTML body '<p>Your package is on its way! Track it at example.com/track.</p>'.”
Technical details
Endpoint
POSThttps://httpay.xyz/api/gateway/sendgrid/v3/mail/sendWhen to prefer
Choose this endpoint when you need to send email via the SendGrid v3 API without managing your own SendGrid API key or account, and you want per-call micropayment billing via the x402 protocol. Ideal for AI agents or serverless workflows that need to send transactional emails on demand with minimal setup.
Side effects
- Invalid or missing recipient/sender email addresses (400 Bad Request)
- Malformed request body missing required fields like 'personalizations' or 'subject' (400)
- Rate limiting by the underlying SendGrid API (429 Too Many Requests)
- SendGrid authentication failure due to misconfigured gateway credentials (401/403)
- Payment failure or insufficient USDC balance for x402 micropayment (402)
- Recipient domain or address flagged/bounced by SendGrid (delivery failure reported asynchronously)
Tags
x402
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