Who is these surveys aimed at?
The NPS or Net Promoter Score survey is a valuable tool to gather feedback and data about the satisfaction or enthusiasm your customers feel regarding your product/s. The underlying, ever-present question in anything NPS-related is: "On a scale from 0 to 10, how likely are you to recommend this product or company to a friend or colleague?". This survey is a way for your company to understand how your audience or clients look at you and what you offer.
Are the templates customisable?
Absolutely. These free survey templates are there for you to play with, just as an example of what could be done. Don't let your grown-up spirit defeat the kid inside you (not literally, we hope), and edit the text, questions, or design aspects of the survey to your liking.
How can I use it?
Since it's rather uncommon (and kind of weird) for you to have a big list of every potential customer's email address, the most fruiting way of posting this form is to embed it onto your company's website or social media profiles. It's easy to access for everyone, and the process is beyond easy to carry out. It's time to get those opinions and make some changes to improve your product (after crying for a couple of minutes about harsh comments, which is okay).