Within Teamwork Desk, you can edit your notification preferences via your profile settings. 

Click your profile icon in the top right of the main navigation bar and select View Profile.

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In your profile area, select the Notifications tab.

At the top of the notifications area, you can choose to apply your preferences to all inboxes you have access to or set different notifications for each inbox.

For each notification type, you can enable email or mobile notifications.

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For more information, see: Editing Your Profile Preferences