# `bird email mailboxes receive-rules create`

## Usage

```bash
bird email mailboxes receive-rules create <mailbox-id> [flags]
```

## Description

Add a receive rule

Add an allow or block rule for a sender address or domain to a mailbox. Block always wins over allow; up to 200 rules per mailbox.

Build the request from flags, a JSON ReceiveRuleCreate body via --body-file ("-" reads
stdin), or both — a flag overrides the matching body field. Run --example to
print a ready-to-edit body, or --dry-run to print the resolved request without
sending it.

## Examples

```bash
# print the body shape (no credentials needed)
bird email mailboxes receive-rules create --example
```

## Options

#### Rule

| Name       | Description                                                                                         |
| ---------- | --------------------------------------------------------------------------------------------------- |
| `--action` | Rule action: allow or block. Block rules always win.                                                |
| `--entry`  | Sender address (alice@example.com) or domain (example.com) to match. Domains also match subdomains. |
| `--note`   | Your own note about why the rule exists.                                                            |

#### Request

| Name                | Description                                                  |
| ------------------- | ------------------------------------------------------------ |
| `--body-file`       | Read the JSON request body from this file; "-" reads stdin   |
| `--example`         | Print a complete example request body, then exit             |
| `--dry-run`         | Print the resolved request without sending it, then exit     |
| `--idempotency-key` | Deduplication key; a retry with the same key won't act twice |

#### Options

| Name                | Description                                      |
| ------------------- | ------------------------------------------------ |
| `--response-schema` | Print the fields this command returns, then exit |

## Related

| Name                                                                                                    | Description           |
| ------------------------------------------------------------------------------------------------------- | --------------------- |
| [`bird email mailboxes receive-rules delete`](/docs/cli/reference/email-mailboxes-receive-rules-delete) | Delete a receive rule |
| [`bird email mailboxes receive-rules list`](/docs/cli/reference/email-mailboxes-receive-rules-list)     | List receive rules    |