I need a delayed autoresponder for gmail

I need someone who can set me up with a delayed autoresponder for my gmail. I need it to be able to automaticly enter the recipiants name in the email message. Im replying to emails I get from craigslist . Im new to this autoresponder stuff so I'd like something I don't have to pay monthly for. let me know my options + make an offer of how much you want to charge. thanks