---
title: kABInstantMessageServiceKey
framework: Address Book
role: symbol
role_heading: Global Variable
platforms: [macOS 10.7+]
path: addressbook/kabinstantmessageservicekey
---

# kABInstantMessageServiceKey

The instant messaging service.

## Declaration

```swift
let kABInstantMessageServiceKey: String
```

## See Also

### Constants

- [kABInstantMessageUsernameKey](addressbook/kabinstantmessageusernamekey.md)