JFBConnect doesn't support any other invitations that Facebook right now. In the future, we're planning to add invitations options for other social networks. However, we're not planning to add an email invitation option at this time. That's a very different beast of a feature to add and can get very complex depending on the hosting environment and email capabilities of the site. Since that's not something we really want to focus on and starts to get away from social networking integration, which is what JFBConnect is all about.
I hope that helps answer your questions, but if you have any others or any feedback on the above, just let me know.
Thanks,
Alex
Email invites possible?
