Create Email Message
You can edit the subject by double-clicking the email in the Server Behaviors window.
If you want to update the subject line in the code directly you can edit line 10 of: /webassist/email/waue_Contact_2.php
To remove unwanted fields you can edit the page: /webassist/email/templates/Blank5.php
The form fields are dynamically added, but can be removed on the top of the page. I've added code already on lines 16-17 to remove the hidden field and submit button.
This is perhaps different from what you are working on here ...
Email message is not being received by indicated recipients. Every other thing seems to work, thanks.html page displayed after the "Send Message" request. No error message received. But at the same time no email is received.