You can consider the mass mailing a non-specific 'pre-notification.' The "actual notification" will come at a later time (whether tomorrow or three months from now, who knows?). The deadline for any individual customer is 60 days after the date of that second communication.
The "actual notification" will come at a later time (whether tomorrow or three months from now, who knows?). The deadline for any individual customer is 60 days after the date of that second communication.