We need a bit more information – what action is the notify filter performing – email or alert? What do the logs show? Is the email/alert record created? More details please.
Did you check the Outgoing email configuration and is this working on ant other actions(email are being sent) and also can you please share the log files here.
The filter is written to notify the ticket assignment. In the logs it is showing successful execution of filter and also showing the email details but in real email was never sent.
Email system is working absolutely fine. there is no issue with it.
as Mark has noted, you need to provde more information such as the format of the address you are sending to, plus any other information relevent to the Notify Action.
If the "To" field is not correct, no notification will be generated.
Please provide more information.
Is it a notifcation filter that should send an email or is it the ITSM Notification Engine workflow that is doing the work? If it's the former then you should be able to see the filter fire and the resulting SQL to create the message in the email messages form. Can you clarify exactly what you think should happen and where you think it is going wrong?