Notification backup? How can I export my push notifications so they can be imported again on accidental deletion?

If I accidentally wipe out a notification or press the clear button, Android does not ask me for confirmation and just cleans up.
If you do not want to use any third party app, that can read every Notification on your phone then there is a built-in Notification log in Android.
How to enable:
You can see your Notification log under Settings shortcut widget.
Long press on home screen.
Select Add widgets" and select Settings.


Click on Notification log and a shortcut will appear on your home screen to launch Notification log.
That's it. Check details of every notification you missed.
You can't send them back into Notification tray.