i am new in OAuth. I want to retrieve twitter, LinkedIn profile data especially Email, but i couldn't find any helpful post.
AuthenticationResult result = OAuthWebSecurity.VerifyAuthentication(Url.Action("ExternalLoginCallback", new { ReturnUrl = returnUrl }));
ExtraData field contains:
Facebook: username (Email address), name, link (URL to their facebook page), gender, birthday
Twitter: name, location, description, url (URL to Twitter page)
LinkedIn: name, headline, summary, industry
as mention only Facebook provide email, but both Twitter and LinkedIn are not, how to retrieve email id.