To toggle notifications in My Account, click on Notifications in the left-hand navigation.

Here, toggle Do Not Disturb on or off. When enabled, you will not receive notifications of any kind. In addition, toggle desktop notifications for new leads on or off. 

When you receive a message in a channel, you will receive a notification on your Notification Bell in My Account.

Click on the bell to see the notification and take action on it.

• Open - brings you to the channel where you can respond to the message or otherwise take action
• Mark as Read/Unread - will change the status of the notification and will affect the count of notifications on your bell
• Clear - eliminate this notification entirely. Note that this can not be undone. This will not delete the associated message.