Camilo. thank you for your answer. That is the problem. Because now I really have the plugin installed inside of my web but I don’t see any result as well. You can test because if you send something in contact form for example data sent but you don’t see any pop up to say that the email was sending correctly. If I remove the plugin I can see the message from contact form7. Sweetalert stop the message of contact form7 but show nothing. I hope you can help me. Thanks really.