Unity game on iPad sending and email with strings

Hey,

I'm creating a game for iPad with the Unity iOS.

It's a simples quiz. At the end of the quiz each player will need to enter their name and email.

Several players will be playing the game. At the end of the day I want to retrieve all the names and emails that were stored.

How can I do this? I've done some research and for what I found I need to store the info on a webservice. How can I do that?

Is it possible to store the info on the machine (local) and then retrieve it?

Thanks for any help.