Hi @Gary Knowles ,
Thank you for posting query in Microsoft Q&A Platform.
You can consider using Logic app with timer trigger to run at 3PM which checks if your pipeline has ran or not and then send email alert to you accordingly.
In logic app, you should consider making API call to Azure data factory service to see your pipeline execution details and then define workflow in logicapp to send email accordingly.
Kindly check below REST API documentation to details related to API calls to made.
https://learn.microsoft.com/en-us/rest/api/datafactory/pipelines
Hope this helps. Please let us know if any further queries.
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