Mail-in database calendar notifications does not get processed

We have a mail-in database that multiple users use to share the calendar feature. However, when a user creates a calendar entry, they would like to be notified before a certain meeting or event but since the mail-in database mailfile does not belong to their name, the notifications does not get processed. Can anyone provide a possible workaround? Thanks.

Subject: Mail-in database calendar notifications does not get processed

Even I am facing the same problem.Please help me in this regard its very urgent.