mate-notification-daemon - 1.26.0-1+deb12u1 main

mate-notification-daemon displays passive popup notifications, as per
the Desktop Notifications Specification.
.
The Desktop Notifications Specification provides a standard way of
doing passive popup notifications on the Linux desktop. These are
designed to notify the user of something without interrupting their
work with a dialog box that they must close. Passive popups can
automatically disappear after a short period of time, as per the
Desktop Notifications spec.