session for contact form 7

Hello
I am using contact form 7 for register the user information and send their info to my email. after submit their information i redirect the form to my inventory page to show some data. it’s working fine,
but the user want to give their information for every time to view the inventory page. so i just want to set the session in contact form 7 destroy the session by click the log out link

anyone please help me to solve the issue….

thank you