# Palmyr Email Inbox Message Send

> Palmyr Email Inbox Message Send is a paid API for AI agents from palmyr.ai, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Sends a new message to a specific email inbox managed by Palmyr's autonomous agent infrastructure, paid via USDC on Solana or Base.

## Facts

- Endpoint: GET https://palmyr.ai/email/inboxes/%7Bid%7D/messages
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/palmyr-email-inbox-message-send-450323ea
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7_sPAjsjiGIpZh0BSVS9S

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 palmyr-email-inbox-message-send-450323ea
```

Example prompt: Send an email from inbox abc123 on Palmyr to hello@example.com with the subject 'Project Update' and the message body 'Hi, just wanted to let you know the report is ready for review.'

## When to prefer this

Choose this endpoint when an AI agent needs to programmatically send email from a Palmyr-managed inbox and can pay per-message via USDC micropayments on Solana or Base using the x402 protocol — particularly in autonomous agent workflows where traditional OAuth email APIs are unsuitable.

## Known failure modes

- Invalid or non-existent inbox ID returns 404 not found
- Insufficient USDC balance or failed x402 payment returns 402 payment required
- Malformed message body or missing required fields returns 400 bad request
- Unauthorized access to inbox returns 401 or 403
- Rate limiting on message sending returns 429 too many requests

## How this service works

Autonomous infrastructure for AI agents — pay with USDC on Solana or Base via x402.

## Output

A confirmation object containing the sent message ID, delivery status, and timestamp indicating the email was successfully posted to the specified inbox.

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "properties": {
    "queryParams": {
     "type": "object",
     "additionalProperties": true
    }
   }
  },
  "output": {
   "properties": {
    "example": {
     "type": "object",
     "additionalProperties": true
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/palmyr-email-inbox-message-send-450323ea/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from palmyr.ai](https://www.zero.xyz/host/palmyr.ai/llms.txt)