The requirement demands that if no lead is created in the last one hour a specified recipient should receive an email saying that no lead was created in the last one hour.

Example:-

No lead was created within the time period 9:00am to 10:00am. The specified recipient should receive an email.

If no lead is created within the next one hour(10:00am-11:00am) the recipient receives another email.

Now suppose a lead is created at 11:30 am. In this case the specified recipient will not receive an email at 12:00 o'clock. The one hour duration will be counted from 11:30 am. That is if no lead is created till 12:30 pm then the recipient will again receive an email at 12:30 pm.

Please help.