Sort by “to” and “From” will reduce the number drastically.
Then, they can target which to read.
Sorting be “to” and “from” doesn’t work when people use aliases (reference Obama), have alternate accounts, multiple accounts, abandoned email accounts.
The point being, due diligence would dictate anything that can’t be culled as spam => must be read.
Due diligence would dictate a review by two separate reviewers before any one email is excluded. To avoid bias or simple error.
As two separate emails chains may be complimentary, correlations in time need to be made between separate emails chains to see the big picture.
After all that an army of hand picked DoJ lawyers descend to start dismissing anything and everything found.
==> no way this happens before the election....unless, again, the fix is in.