I don't see anything documented on a built-in function to send emails for Job/Flow completion in Viya.
SAS® Viya® 3.5 Administration: Jobs and Flows
https://go.documentation.sas.com/doc/en/calcdc/3.5/caljobs/titlepage.htmYou could build this into the flow though, i.e. a job that sends an email saying it failed if any of the flow points failed.
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Greg Wootton | Principal Systems Technical Support Engineer