Could you also check for other agents/end-users of your HelpDesk?
Also, please collect and send us the logs. For that, reproduce the issue and grab the last file from
C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\LOGS
I've tried both. Selecting a specific agent and selecting the "All Agents" group. Which at this point is still don't understand how it work. How agents get assigned to the group.
I verified the agent and i think everything is in order. I even assigned an alternative email.
Plumsail HelpDesk. Error in trigger Notification: All Agents - New ticket in action Send email with parameters: {"Subject":"{{Ticket.Title}}","To":"1","Body":"{{Ticket.Body}}"}. System.NullReferenceException: Object reference not set to an instance of an object.
at Plumsail.HelpDesk.Common.Services.Emails.EmailNotification.Send()
at Plumsail.HelpDesk.Common.Services.Actions.SendEmail.Execute(String listUrl, Int32 itemId)
at Plumsail.HelpDesk.Common.Services.TriggersProcessingService. (ITrigger , String , Int32 , Int32 )