Share and give your friends $5 DynaDollars and you can earn $5 DynaDollars for every friend you refer. DynaDollars can be used toward any Dynadot purchase and will never expire. They can not be redeemed for cash. When someone clicks the link with the referrer ID and makes their first purchase of $9.99 or more within 48 hours, you earn $5 DynaDollars.
Full article: https://www.dynadot.com/community/refer-a-friend.html