The 42U Jetpack Booster adds redirect tags and HTML email templates to Jetpack Contact Forms.
The Jetpack WYSIWYG editor does not save default values. You must add the default value each time you edit the form using the Jetpack WYSWYG.
Jetpack always moves the first TEXTAREA field, no matter where it is on your form, into the third position in the email and in the Feedback Tab. We think this is weird, too, but don't have an easy way to change it.
Sure. Disable HTML emails on the Jetpack Booster Options Screen.