<!--
{
  "availability" : [
    "*: -",
    "iOS: 8.0.0 -",
    "iPadOS: 8.0.0 -",
    "macCatalyst: 13.0.0 -",
    "macOS: 10.10.0 -",
    "swift: -",
    "tvOS: 9.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 2.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Swift",
  "identifier" : "/documentation/Swift/UnsafeSendable",
  "metadataVersion" : "0.1.0",
  "role" : "Protocol",
  "symbol" : {
    "kind" : "Protocol",
    "modules" : [
      "Swift"
    ],
    "preciseIdentifier" : "s:s14UnsafeSendableP"
  },
  "title" : "UnsafeSendable"
}
-->

# UnsafeSendable

A type whose values can safely be passed across concurrency domains by copying,
but which disables some safety checking at the conformance site.

```
protocol UnsafeSendable : Sendable
```

## Overview

Use an unchecked conformance to `Sendable` instead — for example:

```
struct MyStructure: @unchecked Sendable { ... }
```

## Relationships

### Inherits From

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

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

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)