I am new to OAuth and have been playing around with the Twitter API. I am able to fetch the credentials of an user after authentication by making a request to http://api.twitter.com/1/account/verify_credentials.xml. The response contains the user id, screen name etc. but not the email ID.
Is it possible at all to retrieve the email ID of the user?
Update
I believe Facebook provides this information if you specifically request for extended permissions. Is there something similar for Twitter?