This solution is perfect for increasing the customer base, encouraged by word of mouth, and enriching the database with names consistent with the target profile.
Some examples:
Invite a friend to try our herbal tea: fill in the form if your friend subscribes by buying the product, both of you will receive a free thermo bottle!
Invite your friends to subscribe to our newsletter: if they both agree to receive a discount coupon on the next purchase of our scooters!
Generally, this solution provides a safe gift for all participants, which is relevant and attractive to push both those who invite and those who are invited to action.
You also maximize results by rewarding some of the participants with an instant win.