How many people can I invite?

Joinable works best for small groups (less than 50) of people who know each other or are working together to get something done, but we don’t currently have a limit on participants. Because we allow organizers to invite members without them needing to signing up or opt-in, we require groups of more than 200 people to receive user opt-in before they can be messaged (this is prevent abuse and spam). There are no limits to the number of groups you can create.