We are finding people who were permanently banned from our Yahoo list are now applying to join the groups.io list.
If you have a list of those people, you can ban them before they apply. Admin > Members, select the Banned view, enter an email address in the bottom box and click Ban User.
The original question was:
They know they were banned [at our YahooGroups group]. Is it possible to delete their pending request without notifying them?
So, if you 'pre-ban' on your Groups.io group, will they get any kind of response (and what will it be) if they apply to join?