Contact Form 7
Contact Form 7 is one of the most popular WordPress plugins of them all. Contact Form 7 is completely free to use and is a great solution for creating basic contact forms. Simple but flexible. Contact Form 7 delivers all the basic contact form functionality one could ask for. Contact Form 7 features AJAX-based forms which make the submission process faster by eliminating one page load time.
This is a highly flexible plugin and you can create your contact form with fields like Date, Checkboxes, Radio buttons, Menus File uploads and attachments options. The plugin also enables users to add CAPTCHA to filter out any messages generated by using Akismet spam filtering to protect your site from spam.