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  "documentType" : "symbol",
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  "identifier" : "/documentation/Messages/MSCriticalSMSMessenger",
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  "title" : "MSCriticalSMSMessenger"
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# MSCriticalSMSMessenger

The user interface for the Critical Messaging API.

```
@objc class MSCriticalSMSMessenger
```

## Topics

### Determining the maximum allowed recipients

[`var maximumCriticalMessagingRecipients: Int`](/documentation/Messages/MSCriticalSMSMessenger/maximumCriticalMessagingRecipients)

An integer that defines the maximum number of recipients to which the framework can send messages at one time.

### Requesting authorization

[`func requestAuthorization(for: [MSRecipient]) async throws -> [MSRecipient : MSCriticalMessagingAuthorizationStatus]`](/documentation/Messages/MSCriticalSMSMessenger/requestAuthorization(for:))

Requests a person’s authorization to send messages to the provided recipients.

### Checking authorization status

[`func checkAuthorizationStatus(for: [MSRecipient]) async throws -> [MSRecipient : MSCriticalMessagingAuthorizationStatus]`](/documentation/Messages/MSCriticalSMSMessenger/checkAuthorizationStatus(for:))

Confirms the current authorization status for sending critical messages from this app.

### Sending critical messages

[`func send(MSCriticalMessage, to: MSRecipient) async throws -> Bool`](/documentation/Messages/MSCriticalSMSMessenger/send(_:to:))

Sends a critical message to the specified recipient.

### Instance Methods

[`init()`](/documentation/Messages/MSCriticalSMSMessenger/init())

Creates an instance of the critical messenger object.

## Relationships

### Conforms To

[`CVarArg`](/documentation/Swift/CVarArg)

[`Hashable`](/documentation/Swift/Hashable)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`Equatable`](/documentation/Swift/Equatable)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

### Inherits From

[`NSObject-swift.class`](/documentation/ObjectiveC/NSObject-swift.class)

---

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