how to edit email header

i want to add some detail from the form to the email header.
any suggestions?

This is not possible without modifying the Orbeon Forms source code. -Erik

Alternatively, you could write your own email service. Form Runner would post the XML data to the service, and your service would send the email. Then you would have full control over the email message.

-Erik

If it can be done editing source code...then Please help.!!

You can modify email-form.xpl:

    https://github.com/orbeon/orbeon-forms/blob/master/src/resources/apps/fr/email/email-form.xpl

Create a copy, place your copy under:

    WEB-INF/resources/apps/fr/email/email-form.xpl

and make your changes there.

-Erik