echo "/opt/product/bin/job.sh data123"|at -m NOW

echo "/opt/product/bin/job.sh dataA"|batch
echo "/opt/product/bin/job.sh dataB"|batch
echo "/opt/product/bin/job.sh dataC"|batch

command; echo "Process done" | mail -s "Process done" mail@domain.tld

trap 'mail -s "Process done" mail@domain.tld' exit # It will mail on normal exit
    trap 'mail -s "Process interrupted" mail@domain.tld' INT HUP# it will mail on interrupt or hangup  of the process

#!/usr/bin/python

import smtplib

sender = 'from@fromdomain.com'
receivers = ['to@todomain.com']

message = """From: From Person <from@fromdomain.com>
To: To Person <to@todomain.com>
Subject: SMTP e-mail test

This is a test e-mail message.
"""

try:
   smtpObj = smtplib.SMTP('localhost')
   smtpObj.sendmail(sender, receivers, message)
   print "Successfully sent email"
except SMTPException:
   print "Error: unable to send email"

curl -s
  -F "token=APP_TOKEN"
  -F "user=USER_KEY"
  -F "message=The build is done."
  https://api.pushover.net/1/messages.json

process_watcher --pid 1234 --to me@gmail.com

[+] indicates the argument may be specified multiple times, for example:
 process-watcher -p 1234 -p 4258 -c myapp -c "execd+" --to person1@domain.com --to person2@someplace.com

optional arguments:
  -h, --help            show this help message and exit
  -p PID, --pid PID     process ID(s) to watch [+]
  -c COMMAND_PATTERN, --command COMMAND_PATTERN
                        watch all processes matching the command name. (RegEx pattern) [+]
  -w, --watch-new       watch for new processes that match --command. (run forever)
  --to EMAIL_ADDRESS    email address to send to [+]
  -n, --notify          send DBUS Desktop notification
  -i SECONDS, --interval SECONDS
                        how often to check on processes. (default: 15.0 seconds)
  -q, --quiet           don't print anything to stdout

mail-after <your command>

# Check that "pgrep $PROGRAM" returns the rid PID.
PROGRAM=foo
RECIPIENTS=you@yours.com
echo Watching $PROGRAM; while pgrep $PROGRAM &>/dev/null ; do sleep 1; echo -ne "."; done ; echo "$PROGRAM process done" | /bin/mail -s "$PROGRAM process done" $RECIPIENTS;