Uproc with email notification does not send any email when the uproc completed. This issue can happen when the uproc is executed using a Logical Queue which contains a Physical Queue that is remote.
Error message in history trace:
20200729101943 Start Completion Instructions
20200729101943 *** NORMAL TASK COMPLETION ***
07/29/2020 10:19:43 NOTIFICATION_EMAIL REQUEST ERROR - Completed
Release : 6.10
Component : DOLLAR UNIVERSE
The issue will be fixed in Dollar Universe v6.10.91 which will tentatively be release on November 19, 2021.