# Send an email

**POST** `/emails`

Base URL: `https://api.resend.com`

Tags: `Emails`

## Authorization

| Option | Scheme | Type | Sent as | Scopes |
| --- | --- | --- | --- | --- |
| Option 1 | `bearerAuth` | `http` | `Authorization: Bearer <token>` | — |

## Header parameters

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `Idempotency-Key` | `string` | No | A unique identifier for the request to ensure emails are only sent once. [Learn more](https://resend.com/docs/dashboard/emails/idempotency-keys) |

## Request body

Optional. Media type: `application/json`

### Example request body

```json
{
  "attachments": [
    {
      "content": "binary",
      "content_id": "string",
      "content_type": "string",
      "filename": "string",
      "path": "string"
    }
  ],
  "bcc": "string",
  "cc": "string",
  "from": "string",
  "headers": {},
  "html": "string",
  "reply_to": "string",
  "scheduled_at": "string",
  "subject": "string",
  "tags": [
    {
      "name": "string",
      "value": "string"
    }
  ],
  "template": {
    "id": "string",
    "variables": {
      "variableName": "Sign up now",
      "variableName2": 123
    }
  },
  "text": "string",
  "to": "string",
  "topic_id": "string"
}
```

## Responses

| Status | Description | Media type |
| --- | --- | --- |
| `200` | OK | `application/json` |

### Example response: 200 — OK

```json
{
  "id": "string"
}
```

## Related pages

- [Add a contact to a segment](../contacts-contact_id-segments-segment_id/post.md)
- [API keys](../tags/api-keys.md)
- [Audiences](../tags/audiences.md)
- [Automations](../tags/automations.md)
- [Broadcasts](../tags/broadcasts.md)
- [Cancel the schedule of the e-mail.](../emails-email_id-cancel.md)
- [Contact Properties](../tags/contact-properties.md)
- [Contacts](../tags/contacts.md)
- [Create a broadcast](../broadcasts/post.md)
- [Create a list of contacts](../audiences/post.md)

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