I have gone through the firebase invites documentation and implemented the parts I needed on my apps. However I found out that I am limited to sending invites by email/sms. This somehow limits the potential of sending invites to only people who are in your contact list.
For example I cannot send an invite to all my friends on a social platform unless they are in my phone contacts.
Is there a way to go around this? Is Firebase planning to expand their invites platform?