The <groupname>@groups.io is the default when a group is created.? If a subgroup is later created, the main group takes the form of main@<groupname>.groups.io, but the original still works.? If you later delete all subgroups, it reverts to the original. Duane -- Help: /static/help GMF's Wiki: /g/GroupManagersForum/wiki Search button at the top of Messages list A few site FAQs: /static/pricing#frequently-asked-questions