Install kde-telepathy-approver by entering the following commands in the terminal:
sudo apt update sudo apt install kde-telepathy-approver
Description:
KDED module for approving incoming conversations
This package provides a KDED module that starts together with the KDE Plasma Desktop and shows a notification popup when someone from your contacts starts chatting with you. . This package is not meant to be used standalone. It is recommended to install the kde-telepathy metapackage instead.
Homepage: https://projects.kde.org/projects/kde/kdenetwork/ktp-approver
Version: 4:17.12.3-0ubuntu1
Section: universe/kde