WordPress Website configuration - confirmation e-mails/site speed

HI there, My website is [login to view URL], I have copied from my other website - http://berlocke.com. its an online shop with "personalized keychains" as a product. After I transfered it to new domain ([login to view URL]) I have a problem with confirmation emails to me and to customers. What I want to do? First of all, I want when the buyer completed his purchase (paid for the product/products through PayPal or Sofort Überweisung) he should receive a confirmation email with a text (I will provide) and details of his Order. Also at the same time I want to receive an email with order details (I will provide the sample) Actually the samples should be in .phps, they are just not working, I do not know why. The person who has created a website for me is not available right now. Then I want to optimize my website speed, right now google says it's around 35-45, I would like to get atleast 60-70. Maybe through some cache plugins or some other optimization etc. I do not know how much time will it take, but guess not so much. Please do not write/call anywhere else, just here, else your messages/calls will be ignored. Waiting for your ideas and offers. Regards, Tolik