This was previously answered by Garry Lloyd Villaprudente who said: Yes — you can add members with different email domains. That said, they don’t recommend running multiple businesses under one Agency plan, since things like primary calendars can overlap. You can set up multiple teams, but it works best when they’re all under the same company. You can find that answer here: https://appsumo.com/products/tidycal/questions/does-agency-plan-support-users-with-diff-1397772/