xfce desktop custom message on bottom right corner command line

notify-send "My name is bash and I rock da house"

Do not go away:

notify-send -u critical "job complete"

bigger font

phrase="Hey sexy, it's `date +'%l:%M %P'`"
/usr/bin/notify-send --icon=clock -t 4000 "<i>Time Now</i>" "<span color='#57dafd' font='26px'><i><b>$phrase</b></i></span>" >/dev/null 2>&1

with header and body:

sudo apt install dunst -y
dunstify SmartTech101 Hello

More:
https://smarttech101.com/how-to-send-notifications-in-linux-using-dunstify-notify-send/