Invitation-only registration in Buddypress

Hello,

as stated in the title, I am aware that there are a few posts in the forums dealing with this stuff, but I can't seem to find out what I am looking for :slight_frown:

I will be building a site which is like a private fan club for a band, but you can only access the registration page after receiving an INVITATION from us (that's the plan at least).

But I can't find any adequate advice or tips or plug-ins for this matter. I have found several (most of them in these forums) which allow already-registered-users to invite THEIR FRIENDS to sign-up, like a kind of referral deal, but that's not at all what I am looking for. I just want only those who receive an invitation from us to be able to register for a profile.

It is also too much work to manually add each profile and allow them to receive an account email from the system - we have several several hundred users that we have to invite.

Please, can anyone help me out?

Many hot + sunny greetings from Germany.