but you have to know JavaScript.

After successful submission the system starts undefined JS function "addSuccess()". You must create this function with any actions you need (e.g. set cookies). When email form is shown, you must start another JS script (after email form) and check the cookies existence.

It's very simple if you have some skills in JavaScript.

I set Contact us form to a new page by target; however, after filling the form, it stands as it is. I would like it close automatically

Thank you.