I think that there is also the idea of exclusivity: one may like the idea of having this special key to enter this community and someone who has it may want to share it because it is something “special”. Yes, I think it would be a nice plugin. If eventually my community end up being successful I may look into finance it. Right now maybe I will have my assistant send single emails, still I have to find a way to connect the invitation to a sequence on ConvertKit to educate about the community but this is another topic…