I believe if you want a Google Group Collaborative Inbox for an email address at a domain you own, then you need to be paying for a Google Workspace, which is currently something like $6/user/month.
Beyond that, Jelly has better design (IMHO!), can be used without needing a Google account, lets you discuss conversations inline, gives you an activity view for quickly seeing everything that's happened... basically, GGCI is fine, but we are laser-focussed on making Jelly a _great_ shared inbox for teams.
We'd love to chat more about your ideas though -- send us an email! You can find the contact details on https://letsjelly.com ;-)
Beyond that, Jelly has better design (IMHO!), can be used without needing a Google account, lets you discuss conversations inline, gives you an activity view for quickly seeing everything that's happened... basically, GGCI is fine, but we are laser-focussed on making Jelly a _great_ shared inbox for teams.
We'd love to chat more about your ideas though -- send us an email! You can find the contact details on https://letsjelly.com ;-)