What happens to a campaign scheduled to be sent to a shared group if access to the shared group is deleted or rescinded before the scheduled send?
In most cases, the campaign will still be sent to the contacts that were included in that shared group at the time the campaign was scheduled.
The only time the campaign will not be sent to the contacts that were included in that shared group is if ALL of the following options were selected when the campaign was scheduled under "Advanced":
x Send to up-to-date contact groups
x Include new contacts added to groups
x Exclude contacts removed from groups
Note in this scenario, if the shared group was the only group that had been selected for the campaign at the time it was scheduled, the campaign will not be sent and the sender will receive an email notice and alert on their home page that their scheduled campaign could not be sent.