I have a client that needs his customers' registration information sent to him in a simple text email, and also another HTML format email sent to the customer. The text email works fine, however the HTML email never goes through.
Is this because I have the incorrect headers? Or is is possibly because I call the mail() function twice without flushing the first instance of it? What is a good $header variable to plug into the mail() function that will display HTML content on any OS/Mail Software.
Thanks for any guidance,
James.