We just noticed that FME Server 2015 sends empty mails when a workspace does not produce any output and you are using the DataDownload-Service with the "Email results" option.
It would be really nice if FME Server would provide an additional topic:
DATADOWNLOAD_ASYNC_JOB_EMPTY
and a corresponding subscription:
- DataDownload_Email_JobEmpty
to handle this case. The job result (SUCCESS/FAILURE) does not really provide a way to determine if a job was fine but did just produce no output.