Hidden Field

A hidden field is a special input field whose value is sent with a form submission like other fields, but the field itself is not rendered and invisible on the front end.

Contact Form 7 supports the hidden form-tag type to represent hidden fields.

Available options for hidden
Option Examples Description
id:(id) id:foo id attribute value of the input element.
class:(class) class:bar class attribute value of the input element. To set two or more classes, you can use multiple class: option, like [hidden your-text class:y2008 class:m01 class:d01].
default:(source)

Example:

[hidden your-email default:user_email "example@example.com"]

Just another contact form plugin for WordPress. Simple but flexible.