The following PBS directives can be included in the job submission script.
#PBS -m abe
#PBS -M emailaddy{at@}domain.co.za
The " -m abe " alerts you for abort, begin and end for your job.
If you prefer to only be informed when a job concludes then assign "#PBS -m e "
The "#PBS -M emailaddy{at@}domain.co.za" directive is used to identify the recipient.
Something like this is useful for those long jobs and prevents you from having to login and checkup on completed jobs.