Not living in the US I just assume that the NSA can and do scan my email both going to servers in the US and coming back over the pond again. I wouldn’t be the least surprised if they can also get to the information while it’s stored on Hotmail, Yahoo
or any other server in the US. Either by just asking for it, or if they are interested enough - by getting an insider to retrieve it for them.
The best you can hope for is not to attract any attention to yourself so your messages blend in with all the other digital background noise. Using PGP on email that doesn’t contain any secrets just makes that traffic stand out like a sore thumb for no good
reason. But of course there is always that nice warm feeling you get from thinking of the possibility that your encrypted message adds just a little bit to the burden of Big Brother.