# Sending @ notifications


Because chat rooms are continuous conversations, you can send an audible notification to call attention to new messages. The desktop client and web app send a sound. The mobile client sends a push notification.

Enter **@** or choose **At-mention** and select a member’s name, the entire chat room, or present members. Chosen members see new messages in bold with their names highlighted. If they’re online but the chat room is closed, the chat room opens automatically on their screens.

**Note**  
Chat rooms with more than 50 users do not support **@all** and **@present** notifications. Also, Windows users who enter **@** to mention a chat room member do not see that member's presence status in the **At-mention** user list when a chat room has more than 50 users.