Re: phishing mails
The Prince of Nigeria knows English fine.
You can send tens of millions of phishing emails easily, but when someone takes the initial bait, the scammer then needs an actual person to reel him in. That's a limited resource.
So, untargeted phishing emails are purposefully hard to believe in order to ensure that only utter morons respond. Those are the targets you want.
Anyone who is smart enough to figure out that a badly misspelled email from a hotmail address has to be a scam, is someone that's unlikely to fall for it all the way to the bank. A well-written email from a credible spoofed sender could easily net thousands of those; no scammer can handle all of them. It's much better to select only the choicest cretins.