Advanced Gutenberg: Email & Form
You can set the Sender and Receiver Information of Contact Form block:
First, you should register reCaptcha on your site here, then click on Admin console button to input the information.
After that, fill the reCAPTCHA Site and reCAPTCHA Secret Key. Remember to enable reCAPTCHA option. You can select the Language and Theme for reCAPTCHA also.
From here you can download Contact Form and Newsletter Form data. You can export a .CSV or .JSON file.