I never mind sending information in a scanned document as an attachment to an email but I would not type my credit card, address, phone number, etc in to the body of an email. Emails are easily parsed by software programs. If you have a Gmail account, have you ever noticed that the ads are directed at what is in your email or that Google knows when you are taking a flight. They don't have to look at one email. They look at all the data in millions of emails. Just my 2 cents and I am not someone that is paranoid about this type of stuff.