Email Form Help Needed

I have a web form that I put together that allows real estate customers to enter their information then submit the form. The help I need should be simple for anyone who has more than my limited HTML knowledge. In a nutshell, there are 3 parts to this form (all on the same page) that need to be merged and sent as one email. The “Buying a Home” and “Selling a Home” sections are activated by checkboxes. They need to be merged with the contact info on the same page. I’m not looking for anything fancy as far as the email goes. I just want all of the information from the 3 separate form sections to be received in one email. Once the customer has submitted the form, I want them to be redirected to a page titled thankyou.html. Required fields should be First Name, Last Name, Email Address and Phone Number. There is some email validation code on the form that I couldn’t get to work. I’m on a Linux server and am using an email form template that I verified works with my server (in a simplified test). I will provide the web page ([login to view URL]) along with [login to view URL] which contains the fields and the layout of the email to be sent.