Fast Secure Contact Form
The Fast Secure Contact Form plugin is a free and powerful form builder. You can create multiple forms with this plugin and set confirmation email as well as redirection for the user after sending the message. It enables users to add and create all kinds of forms to your WordPress site with little to no effort. It includes support for CAPTCHA and Akismet support to block spammers.
The idea is to generate professional looking forms without having to mess with any confusing templates. You can add extra fields of any type: text, text area, checkbox, checkbox-multiple, radio, select, select-multiple, attachment, date, time, hidden, password, and fieldset. The fields are easy to add, remove or disable, and the backup/restore tool assists with the messages you accidentally delete.
Consider sending mail to single or multiple contacts, allowing you to notify several people in your organization, and include an area for customers to submit attachments if needed.