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.
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.
This free plugin includes a respectable amount of form fields, each of which can be added to your forms through the straightforward editor. Compared to the commercial alternatives, it’s true that Contact Form 7 is lacking in certain areas. This includes the absence of a drag and drop form builder and more advanced form field types, but for anyone seeking a basic forms solution that is very easy to use, you can’t go wrong with Contact Form 7.