Attachment Mailer class

I wrote this class to integrate more functionality for classes like Access_user or DB_cart and other's using PHP’s mail function. But the class can be also used in every web application where the standard text mail is not enough and where attachments are needed. The class has no upload function, use for some file upload functionality the Easy Upload Class. Find in the current class functions like: an e-mail address check (using regular expressions and testing the address against a MX record), All header rows are filtered to prevent spamming via web mail forms, the class can handle multiple attachment. Since version 1.2 is html mail with inline attachments supported.