How to send a letter to the mail in a self-written site that is posted on the hosting?

Question

CAD/CAM

In general, there is a small site, it is necessary to implement the function of sending an order. For example, a user fills out a form and submits it, a letter is formed from the form data and sent from my email (which I created in the cPanel control panel) to the same email, that is, just so that I receive an order letter. I read about the mail function and about the formation of a letter, but I don’t quite understand how to set up the whole thing further.

Answer 1

Best Revit, for any building project. But faster in a compass) or autocad.

Answer 2

Compass 3D, create parts, then combine them into assemblies and generate drawings from them.
It is also possible as bourgeois and designers in sketchup, but it is some kind of "for underdesigners" and not engineers

Answer 3

Use PHPMailer right away so you don't have to deal with the likely problems of the bare mail() function.