# CuseTheJuice Send Outbound Email (SMTP)

> CuseTheJuice Send Outbound Email (SMTP) is a paid API for AI agents from mail.cusethejuice.com, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Sends an outbound email from a CuseTheJuice mailbox via authenticated SMTP, supporting to/cc/bcc, subject, and body fields.

## Facts

- Endpoint: POST https://mail.cusethejuice.com/admin-api/machine/request/send
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mail-cusethejuice-com-c4e13b39
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-Qd_FoRiC3EdO1jo6wxw_

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 mail-cusethejuice-com-c4e13b39 -d '<json body>'
```

Example prompt: Send an email from my CuseTheJuice mailbox (username: myagent, password: s3cr3t) to alice@example.com with cc bob@example.com, subject 'Meeting at 3pm', and body 'Hi Alice, just confirming our meeting today at 3pm. See you then!'

## When to prefer this

Choose this endpoint when an AI agent needs to send outbound email from a CuseTheJuice mailbox using x402 micropayment on Base USDC, especially in agentic workflows where programmatic SMTP access is needed without managing a full mail server.

## Known failure modes

- Invalid or missing credentials (username/password) result in authentication failure
- No valid recipient — at least one of to, cc, or bcc must be provided
- Malformed email addresses cause validation errors
- Empty or missing subject results in rejection
- Payment failure or missing x402 Base USDC payment causes 402 response
- Rate limiting or quota exceeded on the mailbox

## How this service works

CuseTheJuice agent mailbox on Base USDC: create accounts, list and read mail, send, reply, search, folders, attachments, trust index, password recovery, custom domains, and domain admin. GET probe for x402 challenge (machine send message). Real call is POST with JSON body + Payment-Signature header; schema in extensions.bazaar. Pay with x402 (Base USDC). HTTP shape: extensions.bazaar on the 402. Catalog: https://mail.cusethejuice.com/machine-mail.html

## Output

A confirmation that the outbound email was accepted and dispatched via SMTP, indicating successful delivery submission to the recipient(s).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "cc": {
   "type": "string",
   "description": "Optional; comma-separated."
  },
  "to": {
   "type": "string",
   "description": "Recipient(s); comma-separated. At least one of to, cc, bcc must be non-empty."
  },
  "bcc": {
   "type": "string",
   "description": "Optional; comma-separated."
  },
  "body": {
   "type": "string",
   "description": "Optional; empty allowed if subject/recipients suffice for your client."
  },
  "email": {
   "type": "string",
   "format": "email"
  },
  "subject": {
   "type": "string",
   "minLength": 1
  },
  "password": {
   "type": "string",
   "minLength": 1
  },
  "username": {
   "type": "string",
   "minLength": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mail-cusethejuice-com-c4e13b39/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mail.cusethejuice.com](https://www.zero.xyz/host/mail.cusethejuice.com/llms.txt)