kektz

You need Contact Form 7 installed.
This plugin does not put an entire contact form inside a swal alert but just the response message when you click the Submit Button.

Swal Alert for Contact Form 7

Contact Form 7 messages merged with Swal Alert.

dudaster

You want the Contact Form 7 response message when you push submit in a popup colorbox window? This small plugin does just that.
You need Lightbox Plus Colorbox and Contact Form 7 installed.
This plugin does not put an entire contact form inside a colorbox popup but just the response message when you click the Submit Button.

Contact Form 7 Response Colorbox Popup

You want the Contact Form 7 response message when you push submit in a popup colorbox window? This small plugin does just that.

Swal Alert for Contact Form 7 vs Contact Form 7 Response Colorbox Popup