wildiney

This is a plugin used to redirect people for another page, post or site after some seconds .
You can set: 
* time to be redirect 
* site to be redirect 
* message explaining why you are redirecting

RedirectTo Plugin

Plugin to redirect pages or posts to another sites, pages or posts after some seconds that you can delegate.

Ryan Nevius

An add-on for Contact Form 7 (CF7) that provides a straightforward method to redirect visitors to success pages or thank you pages, if their messages are successfully delivered. If no message is sent, or if there is an error with the form, the user will not be redirected.
NOTE: This plugin requires Contact Form 7 version 3.9 or later.

Contact Form 7 – Success Page Redirects

An add-on for Contact Form 7 that provides a straightforward method to redirect visitors to success pages or thank you pages.

RedirectTo Plugin vs Contact Form 7 – Success Page Redirects