Install xfce4-notifyd by entering the following commands in the terminal:
sudo apt update sudo apt install xfce4-notifyd
Description:
simple, visually-appealing notification daemon for Xfce
Xfce4-notifyd is a simple, visually-appealing notification daemon for Xfce that implements the Freedesktop.org Desktop Notifications Specification. . Features: * Themable using the GTK+ theming mechanism * Visually appealing: rounded corners, shaped windows * Supports transparency and fade effects
Homepage: https://goodies.xfce.org/projects/applications/xfce4-notifyd
Version: 0.4.2-0ubuntu2
Section: universe/x11