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

# Delivery & Read Receipts

> Track when messages are delivered to and read by recipients.

Delivery and read receipts let you show checkmark indicators (✓ delivered, ✓✓ read) next to messages in your chat UI. The CometChat Unreal SDK delivers these as real-time events through the `OnReceiptReceived` delegate.

***

## Listen for Receipt Events

Bind to the `OnReceiptReceived` delegate on the Subsystem.

<Tabs>
  <Tab title="Blueprint">
    1. Get a reference to the **CometChat Subsystem**
    2. Drag off and search for **On Receipt Received**
    3. Use **Bind Event** to connect it to a custom event
    4. The custom event receives an `FCometChatReceiptEvent` parameter
  </Tab>

  <Tab title="C++">
    ```cpp theme={null}
    void AMyActor::BeginPlay()
    {
        Super::BeginPlay();

        UCometChatSubsystem* Chat = GetGameInstance()->GetSubsystem<UCometChatSubsystem>();
        Chat->OnReceiptReceived.AddDynamic(this, &AMyActor::HandleReceipt);
    }

    void AMyActor::HandleReceipt(const FCometChatReceiptEvent& Event)
    {
        if (Event.Status == TEXT("delivered"))
        {
            // Show single checkmark ✓
            MarkMessageDelivered(Event.MessageId);
        }
        else if (Event.Status == TEXT("read"))
        {
            // Show double checkmark ✓✓
            MarkMessageRead(Event.MessageId);
        }
    }
    ```
  </Tab>
</Tabs>

***

## FCometChatReceiptEvent

| Property    | Type      | Description                                                           |
| ----------- | --------- | --------------------------------------------------------------------- |
| `MessageId` | `FString` | The message this receipt applies to                                   |
| `Uid`       | `FString` | The user who triggered the receipt (the recipient)                    |
| `Status`    | `FString` | `delivered` — message reached the device; `read` — message was viewed |
| `Timestamp` | `int64`   | Unix timestamp when the receipt was generated                         |

***

## Receipt Flow

```mermaid theme={null}
flowchart TD
    A["Sender sends message"] --> B["Message arrives on recipient's device"]
    B --> C["'delivered' receipt"]
    C -.-> D["OnReceiptReceived — Status: delivered"]
    B --> E["Recipient views message"]
    E --> F["'read' receipt"]
    F -.-> G["OnReceiptReceived — Status: read"]

    style A fill:#333,stroke:#666,color:#fff
    style B fill:#444,stroke:#888,color:#fff
    style C fill:#333,stroke:#666,color:#fff
    style D fill:#333,stroke:#666,color:#fff
    style E fill:#444,stroke:#888,color:#fff
    style F fill:#333,stroke:#666,color:#fff
    style G fill:#333,stroke:#666,color:#fff
```

<Info>
  A `read` receipt implies `delivered`. If you receive a `read` event for a message you haven't seen a `delivered` event for, treat it as both delivered and read.
</Info>

***

## Next Steps

<CardGroup cols={2}>
  <Card title="Connection Status" icon="wifi" href="/sdk/unreal/connection-status">
    Monitor the WebSocket connection state.
  </Card>

  <Card title="Real-Time Events" icon="bolt" href="/sdk/unreal/real-time-events">
    See all five delegates in one place.
  </Card>
</CardGroup>