This post is a guest post, and I didn’t know exactly that the reader is Tom, or he is less prepared person.
If you’re not sure, it’s better to be safe and change the statement into a question. It’s quite likely that a lot of readers already know that sweepstakes are good for obtaining email addresses.
I have seen in the document that you say that I should not ask questions.
Is there a typo somewhere? Asking questions is good because it engages your reader – especially when you use the word you.
Enchant readers. Woo customers. Win business.