title: I see a response message "Your message was sent successfully" in contact form 7 plugin, but did not received any mail
body: <p>I have created one form using contact form7 plugin in wordpress. let example, If ABC fill the form, I will get mail from ABC and then ABC will get thank you message from our domain. but the problem is that I am not getting any mail from that person. I have used email id of my domain in From section. like sujata </p>
  
  <p>when anyone submit form he can see thank you message in green box on site and also recive thank you mail. </p>
  
  <p>I have used mail(2) option to send thank you mail.</p>
  
  <p>please help me to solve my problem.</p>