Are you struggling or overwhelmed by information and communication overload in Microsoft Teams? Take control by getting to know notifications and activity. Microsoft Teams notifications are simply notifications that alert you to new information, whether @mentions, chat messages, or comments related to your work. To help you stay informed and connected with your team members, meetings, and other apps, you have built-in flexibility to manage your notifications better.

• Activity feeds show you what’s happening across your teams and channels, such as unread messages, @mentions, replies, and reactions. Access the activity feed by clicking on the Activity icon on the left side of Teams. You can filter the activity feed by type, such as @mentions, replies, or likes.
• Chats show you your group and one-on-one conversations with a count of unread messages. You can access chat by clicking on the Chat icon on the left side of Teams. You can also pin your favorite chats to the top of the list for easy access.
• Desktop notifications pop up on your screen when you receive a new message or call, and you can choose to show or hide a message preview. You can also reply to a message or answer a call directly from the notification. Desktop notifications are enabled by default, but you can turn them off or change their appearance in your notification settings.

Read Microsoft Teams: Activity and Notifications in the OIT Knowledge Base.