Now a days in all Opensocial Networks they use a feature called "Invite Friends" where peoples can send multiple invitations to friends. The social networks accesses all the email address of the people friends inorder to send invitation just by entering the peoples username and password of the respective mail servers eg. Gmail, Yahoo, MSN, AOL, Hotmail etcs. StesCodes presents the code to grab address contacts of Gmail, Yahoo, AOL, MSN and Hotmail from external website using Asp.net/C#. Stescodes uses no DLL's or EXE's to grab contacts, so this code will work in all server(shared or dedicated) and easy to implement and no postback required.