Are you looking for a contact form plugin for WordPress?
If you value simplicity and flexibility, Contact Form 7 is a great choice.
It allows you to flexibly design the form and mail. You can manage multiple contact forms as well.
In addition, it supports many features including AJAX submitting, CAPTCHA, Akismet spam filtering, file uploading, etc.
Download Contact Form 7 from WordPress Plugin Directory.
And of course, it’s free