How to use contact importer for invites plugin?

Hello,

Greetings to All. I am new to WPMUDEV.org.

Can someone please explain me how i can use the contacts import (from yahoo, gmail etc) functionality for sending invitations using Invites Plugin.

I see some comments in the code stating that it is only available to INCSUB clients. And it seems to be accessing an application hosted @ gateway.wpmudev.org.

Thanks in advance for answering my question.

-Mallik