---
title: Instant Messaging Keys
framework: Address Book
role: collectionGroup
role_heading: API Collection
path: addressbook/instant-messaging-keys
---

# Instant Messaging Keys

The keys used to specify the different fields in a kABInstantMessageProperty property.

## Overview

Overview Neither developers nor users can add more keys.

## Topics

### Constants

- [kABInstantMessageUsernameKey](addressbook/kabinstantmessageusernamekey.md)
- [kABInstantMessageServiceKey](addressbook/kabinstantmessageservicekey.md)

## See Also

### Social Media Constants

- [Instant Messaging Services](addressbook/instant-messaging-services.md)
- [Social Profile Services](addressbook/social-profile-services.md)