Do you want to generate and attach a pdf in your email (like an invoice)? This is the plugin for you.
Usefull if you need to create a user in your wordpress site with each submission.
An slider with a happy face =), excellent for donation forms.
Create paypal donation or payment forms.
Add an item to your customer cart after a form is submitted =).
To connect Smart Forms with more than 700 applications (Like Google Sheets, Constant Contact or Twitter) using zapier.