Dear ntozier,thank you!Admin panel -> Settings -> Tickets -> Default Priorityis a possible solution, but not for me. I already use it, but I cannot select "0" or none. Assigning based on help topic is no good idea too. I would get too many help topics then.I think, i will change the value in the db by hand back to "0", and I will live with the broken query in the email settings => I don't want to change email settings every day on one hand and it is a huge benefit for everyday life on the other.SELECT value FROM `ost_config` where `key` = 'default_priority_id'