Contact Form 7 is the best free WordPress plugin available under the GNU General Public License. You can download the latest version free here. Contact Form 7 can manage multiple contact forms, plus you can customize the form and the mail contents flexibly with simple markup. The form supports Ajax-powered submitting, CAPTCHA, Akismet spam filtering and so on.
One of the best is you can simply redirect all emails to your personal email directly.
Docs & Support
You can find docs, FAQ and more detailed information about Contact Form 7 on contactform7.com. If you were unable to find the answer to your question on the FAQ or in any of the documentation, you should check the support forum on WordPress.org. If you can’t locate any topics that pertain to your particular issue, post a new topic for it.
Download Best free Contact Form 7 for WordPress here