Contact Form 7 is a popular WordPress plugin provided free of cost to capture contact data of visitors to your site. The process involves installing the free plugin of Contact form 7 and creating your contact page. There are plenty of Contact Form 7 Extensions you must know.
Contact form plugins for WordPress help readers and customers contact site admin/owner through the website. Of course, giving out just an e-mail address to site visitors is so clichéd. It is more professional on the part of the site owner to employ a contact form on their website.