I am curious to know how to authenticate the user with twitter and after successful login, i need the email of the user... how can it be done?
Heard that twitter doe
Late answer, but I hope it will help someone.
There is no way to obtain the email from the API.
See the doc there : Twitter doc
Other post relating that : SO post
The link provided in tarantinofan's answer is quite old, but the principles are there, as an explanation on how OAuth works.