We recommend between 3-6, but no more than 10! This is based off of what entrants and admins alike told us in a survey we ran. Check out our blog post on the results and explanation:
It's tempting to add more options, but your entrants want less. Adding too many entry options to your giveaway might cause some potential entrants to turn away. At the end of the day, we leave this completely up to you to decide.
If you'd like some more tips in setting up your giveaway, check out our video tutorials!