cd /home/pi/python
gnuplot plt12

set output "pl12.png"
set terminal pngcairo

sudo apt-get update
sudo apt-get install ssmtp

root=rpi3abc@gmail
mailhub=smtp.gmail.com:465
FromLineOverride=YES
AuthUser=rpi3abc@gmail.com
AuthPass=testing123
UseTLS=YES

echo "Testing...1...2...3" | ssmtp myusername@gmail.com

sudo apt-get update
sudo apt-get install mpack

mpack -s "12-Volt Battery Pack plot" /home/pi/python/pl12.png abd@def.com