Really. How exactly? Blodget appears to qualify this claim (in the Business Insider article) by basically saying "well, they haven't been proven fake yet, so we are suspicious that means they are real".
Ahem.
To me (bearing in mind I'm theoretically supposed to be good at this stuff :D) they look like they are probably faked. The language similarities between the two examples are extremely telling; for example, the odd punctuation (or lack of) visible in both emails strikes me as identical.
I think "suspicious until proven real" is the right approach here.