I'm sorry for my answer, I googled like crazy when I tried to get email addresses from Twitter API (earlier this year) and everyone said that it's not possible... Is that something new @thomaskim ?
Finally I fix it.
Firstly we need to type a Privacy Policy URL and Terms of Service URL and logo. Then open the permissions tab http://prntscr.com/8xcx4y click Request email addresses from users checkbox. Thats it!