---
title: CNInstantMessageAddressUsernameKey
framework: contacts
role: symbol
role_heading: Global Variable
path: contacts/cninstantmessageaddressusernamekey
---

# CNInstantMessageAddressUsernameKey

Instant message address username key.

## Declaration

```swift
let CNInstantMessageAddressUsernameKey: String
```

## Discussion

Discussion This key takes a string value.

## See Also

### Instant Messaging Keys

- [CNInstantMessageAddressServiceKey](contacts/cninstantmessageaddressservicekey.md)