Contact Form: add option to customize the sent email to remove the IP address of the person who submitted the form

Hi there,

I'd like to send you a feature request:
- It would be fantastic if the webmaster could edit the mail script to, for example, not send the user's IP-address (or something like that) in the mail. That means a **custom structure of the sent mail**. It would be fantastic as well if the user could define a custom subject for the mail, so that it isn't always the same subject but a subject fitting to the content of the message.
- Furthermore, it would be great to optionally send a **copy of the message to the user himsel**f.

With the word "user", I mean the person using the form (sending the mail) - not the webmaster.

I'm looking forward to hearing from you!
Daniel

The issue names only the contact form mail script and does not identify files or tests. Start by locating that script and the existing sent-mail behavior; done would require a defined, tested approach for customizing the message and subject, omitting the submitter's IP address, and optionally sending a copy to the submitter.

Written by the indexing model from the issue text.