Forward, and you're done
An owner or admin adds an email address under Customer inbox: a name, the channel emails go to, your team's address and the name on replies. Freesbe shows the address to forward to. In Google Workspace, add it as a member of the support@ group or as a forwarding address in Gmail; in Microsoft 365, turn on email forwarding for the mailbox in the Exchange admin center. The Freesbe address takes mail as soon as you add it, so you can try it by emailing it yourself.

