I have used the technique of filtering and subscriptions for firing a mail to a person or group when a issue is not been acted upon for more than 24hours for a particular project. what i have done is, I ilter the issues based on this JQL "project = MPP and created >= -24h and resolution = UNRESOLVED and priority = P0(Urgent)" and then saved this filter and added myself for the subcriptions for this filter, set the time and other things accordingly. But still I am not getting mail notification. can somebody help me out and explain why am I not recieving the mail notifications?