> ## Documentation Index
> Fetch the complete documentation index at: https://mintlify.com/resend/resend-go/llms.txt
> Use this file to discover all available pages before exploring further.

# Update broadcast

> Update an existing broadcast

## Update

Update a broadcast using the default context.

```go theme={null}
func (s *BroadcastsSvcImpl) Update(params *UpdateBroadcastRequest) (UpdateBroadcastResponse, error)
```

### Parameters

<ParamField path="params" type="*UpdateBroadcastRequest" required>
  The broadcast update parameters.
</ParamField>

### Returns

Returns an `UpdateBroadcastResponse` containing the updated broadcast ID.

### Example

```go theme={null}
updateParams := &resend.UpdateBroadcastRequest{
  BroadcastId: "broadcast_123",
  Subject:     "Updated: Flash Sale Extended!",
  Html:        "<h1>Sale extended by 24 hours!</h1>",
  Text:        "Our flash sale has been extended!",
}

response, err := client.Broadcasts.Update(updateParams)
if err != nil {
  panic(err)
}

fmt.Println("Broadcast updated:", response.Id)
```

***

## UpdateWithContext

Update a broadcast with a custom context.

```go theme={null}
func (s *BroadcastsSvcImpl) UpdateWithContext(ctx context.Context, params *UpdateBroadcastRequest) (UpdateBroadcastResponse, error)
```

### Parameters

<ParamField path="ctx" type="context.Context" required>
  Context for the request, useful for timeouts and cancellation.
</ParamField>

<ParamField path="params" type="*UpdateBroadcastRequest" required>
  The broadcast update parameters.
</ParamField>

### Returns

Returns an `UpdateBroadcastResponse` containing the updated broadcast ID.

### Example

```go theme={null}
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()

updateParams := &resend.UpdateBroadcastRequest{
  BroadcastId: "broadcast_123",
  Name:        "Summer Sale Campaign - Extended",
  Subject:     "Last Chance: Summer Sale!",
}

response, err := client.Broadcasts.UpdateWithContext(ctx, updateParams)
if err != nil {
  panic(err)
}
```

***

## Types

### UpdateBroadcastRequest

Request payload for updating a broadcast.

```go theme={null}
type UpdateBroadcastRequest struct {
  BroadcastId string   `json:"broadcast_id,omitempty"`
  SegmentId   string   `json:"segment_id,omitempty"`
  AudienceId  string   `json:"audience_id,omitempty"` // Deprecated: Use SegmentId instead
  From        string   `json:"from,omitempty"`
  Subject     string   `json:"subject,omitempty"`
  ReplyTo     []string `json:"reply_to,omitempty"`
  Html        string   `json:"html,omitempty"`
  Text        string   `json:"text,omitempty"`
  Name        string   `json:"name,omitempty"`
}
```

<ParamField path="BroadcastId" type="string" required>
  The ID of the broadcast to update.
</ParamField>

<ParamField path="SegmentId" type="string">
  The updated segment ID to send the broadcast to.
</ParamField>

<ParamField path="AudienceId" type="string">
  **Deprecated:** Use `SegmentId` instead. Audiences have been renamed to Segments.
</ParamField>

<ParamField path="From" type="string">
  The updated sender email address.
</ParamField>

<ParamField path="Subject" type="string">
  The updated email subject line.
</ParamField>

<ParamField path="ReplyTo" type="[]string">
  Updated array of reply-to email addresses.
</ParamField>

<ParamField path="Html" type="string">
  The updated HTML content of the broadcast.
</ParamField>

<ParamField path="Text" type="string">
  The updated plain text content of the broadcast.
</ParamField>

<ParamField path="Name" type="string">
  The updated internal name for the broadcast.
</ParamField>

<Note>
  You can only update broadcasts that are in "draft" status. Sent or scheduled broadcasts cannot be modified.
</Note>

### UpdateBroadcastResponse

Response from updating a broadcast.

```go theme={null}
type UpdateBroadcastResponse struct {
  Id string `json:"id"`
}
```

<ResponseField name="Id" type="string">
  The unique identifier of the updated broadcast.
</ResponseField>