Buyer Scam?

I bought a camera tripod off amazon, and one of the packaging papers had a "free gift" part on it that if you email the email on there, including the amazon review you made and your option of one of two choices of a free thing on there, would be given and shipped for free. I got said free item and is legit, but I got this email later on from the same person who came from that last exchange, but the name of the person in the email itself is different than the sender, and wanted to know if this is a potential scam, which I am unsure of because I've gotten a couple things from this company/person/ Thoughts?