The 'make your own php mail form' tutorial

This is a recipe for a 'simple yet powerful' mail form. Perfect for beginners. Your address will neither be visible on any page nor detected by spambots. You will receive the mail marked as coming from the form, and your guest will automatically receive a copy of the mail (s)he sent (provided correct email address is entered). Only 2 fields are required; if 'Name' is left blank, 'Sender' will be sender's email address, and if 'Subject' is left blank, the mail will still get to your mailbox.