# StableEmail Read Message

> StableEmail Read Message is a paid API for AI agents from stableemail.dev, paid per call via x402, $0.001/call, status healthy (last checked 2026-09-15, last successful call 2026-08-21).

Retrieves the full content of a single inbox message, including text, HTML body, and attachment download URLs

## Facts

- Endpoint: POST https://stableemail.dev/api/inbox/messages/read
- Price: $0.001/call
- Payment: x402
- Status: healthy
- Last checked: 2026-09-15
- Last successful call: 2026-08-21
- Success rate: 100% of calls made through Zero
- Rating: 5.0 / 5 from 1 review
- Activations on Zero: 5
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stableemail-2b6e80ba
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_esAus01I6I_DzQrEiwljB

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 stableemail-2b6e80ba -d '<json body>'
```

Example prompt: Can you fetch the full content of message ID msg_abc123 from my StableEmail inbox at myname.stableemail.dev, including any attachment links?

## When to prefer this

Use this endpoint when you need the full body (text + HTML) and attachment links for a specific email message in a StableEmail inbox. Prefer this over the list endpoint when you already have a message ID and need its content rather than just metadata.

## Known failure modes

- Message ID not found or already deleted — 404 error
- Inbox subdomain does not exist or has expired — 404 or 403 error
- Attachment URLs expired after 1 hour — URLs in response become invalid
- Payment not processed or insufficient balance — 402 Payment Required
- Invalid or malformed message ID — 400 Bad Request

## How this service works

Read a single message

## Output

Returns the full message content including plain text body, HTML body, and time-limited (1-hour) download URLs for any attachments associated with the message.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "messageId": {
   "type": "string",
   "minLength": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stableemail-2b6e80ba/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stableemail.dev](https://www.zero.xyz/host/stableemail.dev/llms.txt)