xfce4-notifyd FAQ
How can I bind a keyboard shortcut to toggle "Do Not Disturb" mode?
Enable Do Not Disturb
xfconf-query -c xfce4-notifyd -p /do-not-disturb -s true
Disable Do Not Disturb
xfconf-query -c xfce4-notifyd -p /do-not-disturb -s false
Toggle Do Not Disturb
xfconf-query -c xfce4-notifyd -p /do-not-disturb -T
Some markup (e.g. parts of html/css) is not recognized
The text formatting in xfce4-notifyd is based on what Pango supports. As a widget, it uses a GtkLabel. This adds support for the hyperlink tag.
xfce4-notifyd spams the syslog with warnings about GtkLabel contents.
Corresponding bugreport
To suppress logcheck from reporting these log lines, put the following in /etc/logcheck/ignore.d.workspace/xfce4-notifyd (creating it if necessary):
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ xfce4-notifyd\[[0-9]+\]: Failed to set text
'.+' from markup due to error parsing markup: .+$