Notification Center on your Mac
Notification Center has been redesigned to keep all of your important information, reminders, and widgets in one convenient place. Get details about calendar events, stocks, weather, and more—and catch up on notifications you might have missed (emails, messages, reminders, and more).
Open Notification Center. Click the date or time at the top right of the screen, or swipe left from the right edge of the trackpad with two fingers. Scroll down to see more.
Interact with your notifications. Reply to an email, listen to the latest podcast, or view details about calendar events. Click the arrow in the top-right corner of a notification to view options, take action, or get more information.
Customize your widgets. Click Edit Widgets to add, remove, or rearrange widgets. You can also add third-party widgets from the Mac App Store.
Set your notification preferences. Open System Preferences and click Notifications to select which notifications you see. Notifications are sorted by most recent, and redesigned Today widgets deliver information at a glance.
Learn more. See the Apple Support article Use Notifications on your Mac.