Our GetConnect application allows integration with gmail, aol, yahoo, hotmail, linkedin etc through one unified API. Makes things nice and easy. You don’t even have to do any programming if you want to do elegant email invites.
We think this is a pretty cool application, since we manage the ever changing intergration, while you only have to handle our single API. Address book integration is an important part of any new site now, helping to grow your audience.
We weren’t sure that this was something we wanted to do since these are “peer initiated emails” and can be quite annoying to the receiver, but then we realized we are providing a global optout, something that no one else is doing and so if you are using us for email delivery then you are providing the most elegant solution to peer initiated emails with out intruding.