http://keybase5btp2qikoau6u326pvotn47gb55mo6fjxxyxdoywiinomr5id.onion/blog/new-team-features
You can invite by email or phone If you'd like to move an existing mailing list, community, extended family, or company onto Keybase, you can now type or paste email addresses straight into the app. We've changed the form to be friendlier to large lists: From the terminal: keybase team add-member {teamname} --email={email} --role=writer From your phone, you can invite anyone from your contacts.