Get contacts/invite friends from FB, Yahoo, Hotmail and Gmail

Hi,

This job is for ASP.NET (C#) web forms developers only.

I want to allow people to invite their friends to join our website. For that, what I will need is to get contact lists and/or be able to invite friends from Facebook, Yahoo, Hotmail and Gmail. There are APIs for these and I've done this for much older versions but don't have time to update my libraries right now and need something who has done this recently.

So, the task is to deliver the C# code for importing contacts and/or sending out invitations for the mentioned websites. E.g. User logs into our site and clicks a button import contact list from Gmail. I then use the code (follow the instructions) you've given me to get them authenticated and get their contacts from Gmail. Think the best way to deliver it is in an empty project so that you can test the process by perhaps showing the contacts on a labels before delivering it. Either way, I just need the code and instructions to use it and possibly a skype id to call in case the instructions aren't clear.

You do not need to make a front end or handle the contacts once they have been retrieved. On the other hand, I don't want you to send me links to the API or articles either, I need working and tested code. Only bid if you have done this recently and in your bid include details of what you will bring from which service so if Facebook doesn't allow you to bring friends email addresses then tell me that and suggest the alternative like sending out requests via FB messages.

Cheers,

Atif