Here’s the standard procedure widely used by terrorists to communicate via email. They open an email account with any free service. Then, they create the message and store it as a draft. Another operative, perhaps a continent away goes into this account on a pre-determined basis and reads and deletes the saved (unsent) message. That way the sender knows it was delivered. Since they never actually sent a message nobody can intercept it unless they somehow locate the account and break the password. (Very unlikely.)
So, spying on emails has probably been an unprofitable affair as far as tracking terrorist.
There are also several unbreakable encryption algorithms that can be downloaded by anyone.
Another method used for centuries is to take two identical but obscure books. They then put down something like 10,474,88,235 etc. That’s look on page 10 for word 474. Look on page 88 for word 235. Again, unless you know what book you’re SOL.
So, again, why is the NSA spying on emails?
The NSA has about 5,000 Edward Snowdens roaming around the global data pipelines doing anything they want and laughing with each other about it.
Gee, like we didn’t already know that this MARXIST regime was a criminal organization.
Tell me something I don’t already know. Please.
This can’t be true. Our Pressdent told us “Nobody is listening to your phone calls.”
Impeach the liar!
Clapper should be charged with lying before congress.
Wah?
No?