# fetch

Fetch a specific mail.

### Usage

```ts
const receiver = '0x...';
const mailIndex = 1n;
const receivedEnvelope = await mail.fetch(receiver, mailIndex);
```

### Returns

`Promise<ReceivedEnvelope>`

A promise that resolves to the received mail Envelope.

### Parameters

#### receiver

* **Type** `Address`

The mail receiver's address.

#### mailIndex

* **Type** `bigint`

The index of the mail to be fetched.