# Update Draft

::::callout{intent="warning"}
Inboxes are currently in private beta and only available to a limited
number of users. The response shape might change before GA.

[Get early access](https://resend.com/help?type=report\&message=I+would+like+early+access+to+Inboxes.\&priority=low) if you're interested in testing this feature.

Once you have access, upgrade your Resend SDK to use the new methods:

:::code-group
```bash Node.js
npm install resend@6.28.1-preview-inboxes.2
```

```bash CLI
npm install -g resend-cli@2.22.0-preview-inboxes.2
```
:::
::::

Omitted fields are left unchanged. Send at least one of `to`, `cc`, `bcc`,
`subject`, `text`, or `html`. The merged draft must still contain at least one
non-empty field. Combined recipients cannot exceed 50.

## Path Parameters

The Inbox ID.

The Draft ID.

## Body Parameters

- `to` (string | string\[] | null) — Recipients. Pass `null` to clear.

- `cc` (string | string\[] | null) — CC recipients. Pass `null` or `[]` to clear.

- `bcc` (string | string\[] | null) — BCC recipients. Pass `null` or `[]` to clear.

- `subject` (string | null) — The subject. Pass `null` to clear. Max 2000 characters.

- `html` (string | null) — The HTML body. Pass `null` to clear.

- `text` (string | null) — The plain-text body. Pass `null` to clear.

## Response Fields

- `object` (string) — Always `inbox_draft`.

- `id` (string) — The ID of the draft.

- `type` (string) — `standalone` for a new conversation, or `reply`.

- `to` (string\[] | null) — Recipients.

- `cc` (string\[]) — CC recipients.

- `bcc` (string\[]) — BCC recipients.

- `subject` (string | null) — The subject.

- `html` (string | null) — The HTML body.

- `text` (string | null) — The plain-text body.

- `thread_id` (string | null) — The Thread ID when this draft is a reply. `null` otherwise.

- `reply_to_email_id` (string | null) — The Email ID being replied to. `null` otherwise.

- `email_id` (string | null) — The queued outbound email after send. `null` until then.

- `created_at` (string) — ISO 8601 timestamp when the draft was created.

- `updated_at` (string) — ISO 8601 timestamp when the draft was last saved.

:::code-group
```ts Node.js
import { Resend } from 'resend';

const resend = new Resend('re_xxxxxxxxx');

const { data, error } = await resend.inboxes.drafts.update({
  inboxId: 'b3e2b2b6-3f0e-4c8e-9ad3-2f43a1e2c7f1',
  draftId: 'c3a1e8b4-2d5f-4a7c-9e10-6b8d7f5a4c32',
  subject: 'Refund issued for order 1041',
});
```

```bash cURL
curl -X PATCH 'https://api.resend.com/inboxes/b3e2b2b6-3f0e-4c8e-9ad3-2f43a1e2c7f1/drafts/c3a1e8b4-2d5f-4a7c-9e10-6b8d7f5a4c32' \
     -H 'Authorization: Bearer re_xxxxxxxxx' \
     -H 'Content-Type: application/json' \
     -d $'{
  "subject": "Refund issued for order 1041"
}'
```

```bash CLI
resend inboxes drafts update \
  --inbox_id b3e2b2b6-3f0e-4c8e-9ad3-2f43a1e2c7f1 \
  --draft_id c3a1e8b4-2d5f-4a7c-9e10-6b8d7f5a4c32 \
  --subject "Refund issued for order 1041"
```
:::

:::code-group
```json Response
{
  "object": "inbox_draft",
  "id": "c3a1e8b4-2d5f-4a7c-9e10-6b8d7f5a4c32",
  "type": "standalone",
  "to": ["ada@example.org"],
  "cc": [],
  "bcc": [],
  "subject": "Refund issued for order 1041",
  "html": "<p>Refund issued for order 1041.</p>",
  "text": "Refund issued for order 1041.",
  "thread_id": null,
  "reply_to_email_id": null,
  "email_id": null,
  "created_at": "2026-08-05T14:12:04.110Z",
  "updated_at": "2026-08-05T14:13:22.004Z"
}
```
:::

## Related pages

- [Account Management](./account-management-index.md)
- [API Keys](./api-keys-2-index.md)
- [API Keys](./api-keys-index.md)
- [API Reference](./api-reference-index.md)
- [AudiencesDEPRECATED](./audiencesdeprecated-index.md)
- [Authorized Apps](./authorized-apps-index.md)
- [Automations](./automations-index.md)
- [Broadcasts](./broadcasts-index.md)
- [Build with AI](./build-with-ai-index.md)
- [Changelog](../changelog.md)

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