# Questflow Email Sender

> Questflow Email Sender is a paid API for AI agents from api.questflow.ai, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Sends an email from a no-reply@questflow.ai address (or other mail address) to a specified recipient

## Facts

- Endpoint: POST https://api.questflow.ai/x402/agent/qrn:agent:687df7a9b234010b7d331b17
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/questflow-66eaae9c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AqkfE5KGZDSOCOTzp6V-q

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 questflow-66eaae9c -d '<json body>'
```

Example prompt: Send an email to john.doe@example.com with the subject 'Your Weekly Report' and body 'Hi John, here is your summary for this week: sales were up 12%. Best, Your Assistant.'

## When to prefer this

Choose this endpoint when an AI agent needs to send a one-off or automated email to a recipient without requiring the user to configure their own SMTP server or email provider. Ideal for agentic workflows where the agent needs to notify, report, or communicate results to a human via email using a pre-configured sender address.

## Known failure modes

- Invalid or malformed recipient email address returns an error
- Missing required fields (recipient, subject, or body) cause a validation error
- Payment failure or insufficient USDC balance prevents the call
- Rate limiting or quota exceeded on the mail service
- Recipient mail server rejects the message (bounce)

## How this service works

Can send email using no-reply@questflow.ai other mail address. | Powered by Questflow

## Output

A confirmation response indicating whether the email was successfully sent, including delivery status and any relevant message identifiers.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "string",
   "description": "Your message to the agent"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "response": {
  "type": "string",
  "required": true,
  "description": "Response from the agent"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/questflow-66eaae9c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.questflow.ai](https://www.zero.xyz/host/api.questflow.ai/llms.txt)