Dear [Mom's friend],
Mom had mentioned to me that you had received some e-mail(s) about Barack Obama. There are a lot of lies and half-truths in circulation about him now - and when you receive an e-mail that makes a bunch of outrageous claims and you want to fact-check them, the best website for that sort of thing is http://snopes.com.
I don't know which e-mail(s) you received, but here is Snopes's breakdown of the Obama e-mails in wide circulation:
In short, virtually anything you're likely to hear about any political candidate in an unsourced e-mail is highly likely to be complete bullshit.
Great seeing you - and thanks so much for the wonderful chicken salad...
When the going gets weird, the weird turn pro. - Hunter S. Thompson