# StableEmail Read Inbox Message

> StableEmail Read Inbox Message is a paid API for AI agents from StableEmail at stableemail.dev, paid per call via MPP or x402, $0.001/call, status unknown (last checked 2026-10-11).

Retrieves a single inbox message by ID, returning its text body, HTML body, and time-limited attachment download URLs.

## Facts

- Endpoint: POST https://stableemail.dev/api/inbox/messages/read?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP, x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Provider: StableEmail
- Docs: https://stableemail.dev
- Website: https://stableemail.dev
- Tags: email, send, inbox, forwarding, subdomain, social
- Canonical page: https://www.zero.xyz/c/stableemail-read-fbedca3a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NeIusHBWStrmtX1CaPmYD

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-read-fbedca3a -d '<json body>'
```

Example prompt: Can you read inbox message msg_abc123 from my StableEmail inbox and show me the full text and any attachment links?

## When to prefer this

Use this endpoint when you have a specific messageId and need to retrieve the full content of a single inbox message, including its HTML, text, and attachment URLs. Ideal for programmatic inboxes on stableemail.dev where you need to process or display received email content.

## Known failure modes

- Invalid or missing messageId returns a 400 error
- Message not found or expired (older than 90 days) returns a 404 error
- Insufficient USDC balance (payment failure) returns a 402 error
- Attachment URLs expire after 1 hour and become inaccessible

## How this service works

Read a single inbox message ($0.001). Returns text, HTML, and attachment download URLs (1hr expiry). Message content available for 90 days from receipt.

## Output

Returns the full message content including plain-text body, HTML body, and pre-signed attachment download URLs (valid for 1 hour). Message content is accessible for up to 90 days from receipt.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stableemail-read-fbedca3a/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)