# httpay.xyz Resend Email API Gateway

> httpay.xyz Resend Email API Gateway is a paid API for AI agents from httpay.xyz, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Sends transactional or marketing emails via the Resend email API, proxied through httpay.xyz's x402 pay-per-call gateway

## Facts

- Endpoint: POST https://httpay.xyz/api/gateway/resend/v1/emails
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 1
- Tags: x402
- Canonical page: https://www.zero.xyz/c/httpay-xyz-78740e97
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uAdQj8nKZSJcar0GsBj0d

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability httpay-xyz-78740e97 -d '<json body>'
```

Example prompt: Send an email to jane.doe@example.com from noreply@myapp.com with the subject 'Welcome to MyApp!' and the body 'Hi Jane, thanks for signing up — we're thrilled to have you!'

## When to prefer this

Use this endpoint when you need to send email via the Resend API on a pay-per-use basis without managing your own Resend API keys or subscription. Ideal for agents making infrequent or variable-volume email sends billed per call at $0.001 USDC via x402.

## Known failure modes

- Invalid recipient or sender email address returns a 400 or validation error
- Missing required fields (to, from, subject, body) causes a bad request error
- Resend API key misconfiguration on the gateway side returns a 500 or auth error
- Rate limit or quota exceeded on Resend returns a 429 error
- Malformed HTML content may cause rendering issues without failing the send

## How this service works

API Gateway: Resend email API

## Output

Returns a delivery confirmation object from Resend including a message ID and send status indicating whether the email was successfully queued or delivered.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/httpay-xyz-78740e97/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from httpay.xyz](https://www.zero.xyz/host/httpay.xyz/llms.txt)