I offered no timeline. you are the one offering up timelines.
I don't think you are getting what I wrote.
Everything is captured whether you are under wiretap orders or not.
So most likely they were not monitoring Rich real time.
But... at some point in time after it occurred they could have done a database search and found the communications.
Just like they could pull up any emails you made to someone overseas.. yesterday or last year. (and here is a hint... England or Austrailia could pull them up even if they stayed withing the USA.)
That's the problem - you are not thinking timelines.
If FBI knew around July 10th that Rich was leaking the emails then why didn't they arrest or stop him while he was committing the illegal act???
And your database search timeline is flimsy, so they did a database search right at the time of death? Too convenient again.