As the title states it would be very helpful if Zabbix included an option for monthly scheduled reports to chose the day of the month that the report is generated and sent out. Currently all monthly reports are generated and sent on the first of each month, but there are many situations where sending the report on different days of the month would be useful.
Also including a broader range of period options, like being able to select the last 30 days instead of being limited to calendar months would help improve the functionality of this proposed change.