By including form submissions as PDF attachment in email notifications, it will become much easier to share and also help create a professional look & feel for your emails.
Blue Form Builder for Magento 2 gives you the ability to do this quickly with just a few steps needed. Let's take a look!
https://www.magezon.com/magento-2-form-builder.html

First, please make sure that you also install PDF plugin: https://www.magezon.com/blue-form-builder-pdf.html
1. Attach to admin email notification
In the form edit page, open Settings > Email Notifications > Admin. Then turn on the button Attach PDF to notification emails.

2. Attach to customer email notification
Open Settings > Email Notifications > Customer, then turn on the button Attach PDF to autoresponder emails.

3. Design PDFs
Go to Store > Settings > Configuration. In the left panel, span MAGEZON EXTENSIONS and open Blue Form Builder. Click Design Settings tab where you can customize the PDF.
Uncheck the checkbox Use system value to make change to any field.