> ## Documentation Index
> Fetch the complete documentation index at: https://docs.automate.ax/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Automate.ax automations are TypeScript programs.
> Use Bun for installation and command examples.
> Use Automate.ax for the product name and automate.ax for the package, CLI, and domain.
> Treat documented public APIs as current; do not invent transitional or deprecated names.

# Update broadcast

> Update a draft Resend broadcast.

`resend.updateBroadcast` update a draft Resend broadcast.

```ts automations/resend-updateBroadcast.automation.ts theme={null}
import { automation } from "automate.ax"
import { resend } from "automate.ax/resend"

export default automation("Update broadcast", () => {
  resend.updateBroadcast({
    broadcastId: "broadcast_123",
    patch: { subject: "Updated news", markdown: "# Updated" },
  })
})
```

The patch must contain at least one mutable field. Update a broadcast before it begins sending. Optional second argument `{ account }` selects the Resend account binding.