I am adding 'Invite a Friend' on my website, for that I have planned to included email grabber. I have tried http://openinviter.com/demo/ but you can see its not working for Linkedin, its mentioned on that demo page too.
How can I grab Email Addresses of LinkedIn Connections ? Preferably in PHP.
For connections, you can only grab the most basic profile fields, which does not include email address:
For 1st and 2nd degree connections, you may only retrieve profile fields available with the r_basicprofile member permission