How much data stored online is absolute garbage?

How much data stored online is absolute garbage?
I'll bet 99 + %.
Most stuff in my email accounts be it work or personal is 99% unwarranted.
Time for a hero / heroine to come in, make him / herself a billionaire by inventing easy 'delete crap in my inbox' solution?
I'll bet 99 + %.
Most stuff in my email accounts be it work or personal is 99% unwarranted.
Time for a hero / heroine to come in, make him / herself a billionaire by inventing easy 'delete crap in my inbox' solution?