Option to delete notifications all together

1. It would be nice to have select option at bottom, so that we can select all notifications. What happens at present is, you select all notifications from top and then you have to scroll way down to bottom to hit 'Delete Selected'



2. Possible to auto delete old notifications older then 30 days?

3. Please add one more option saying, 'Delete All' notifications. I have 93 pages of notifications on my forums. How can I delete it in easy way rather then going through all 93 pages.