Manage notifications in Teams
Microsoft Teams offers different ways to access, receive, and manage notifications. These settings include how, when, and where your notifications appear, custom settings for channels and chat, appearance and sounds, turning off specific messages, and so on.
On a Windows 10 machine, to manage your notifications, select your profile in the top right of Teams, then select 
Settings
From the drop down list, select 
Notifications
Manage email notifications
In Missed activity emails, choose how frequently you receive emails for a missed activity or turn them off entirely. Note: These emails don't contain notifications from private channels at this time.
Manage notification sounds
To turn off or turn on notification sounds, toggle Play sound for notifications to on.
Manage notifications from Activity
Go to Activity on the left side of Teams, hover over the notification that you want to change, and then select More options 
.
From here, mark a notification as read or unread, and on channel notifications you can adjust what kind of activity you get notified about for that specific channel.
Customize channel notifications
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To be notified about all your shown channels, select All activity
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To be notified only when you are @mentioned or when you receive replies to your messages in channels, select Mentions & replies
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For the most control over your channel notifications, select Custom
Customize all other notifications
Choose the Edit button next to the category to customize how you receive notifications for that category.
Categories include Chat, Meetings, People, and Other.
Only get notifications in the app
Select Edit next to Chat, then choose Only show in feed for a specific category. All notifications for that type of activity will be sent to Activity , which you can find at the top left corner of Teams.
Note: The app will still flash on desktop taskbar when notifications arrive, but no pop-up will show on your desktop.
Get notified in the app and on desktop
Select Banner and feed to receive notifications as both a desktop notification and as an alert in Activity .
Note: In Windows, notification banners will show in the bottom right of your screen. In macOS, they show in the top right.
Turn off notifications for specific conversations
In a channel conversation, go to the top right corner of the original message and select More options > Turn off notifications.
As with muting a chat, turning off notifications to a channel conversation will stop updates for that specific conversation.
Note: You'll still receive notifications if someone directly @mentions you.
Change channel notifications from the teams list
Hover on a channel in your teams list and select More options 
> Channel notifications .
Choose from All activity, Off, or Custom—just as you would in settings. When you select Custom, a new window will open that has more options.
Note: By default, channel @mentions are turned off and all new posts will only show in Activity .
Change Microsoft Teams notifications using Windows Settings
Select Windows Key and type Settings to open Windows Settings, then type Notifications in the search bar and select Notifications & actions settings from drop down
Select Microsoft Teams from the list
Use slider button to enable or disable Notifications for Microsoft Teams
Check or uncheck options for Show notification banners and Show notifications in action center
Use slider buttons to enable or disable Hide content when notifications are on lock screen and Play a sound when a notification arrives
Select Top, High, or Normal priority of notifications in action center
