Install libsendlater4 by entering the following commands in the terminal:
sudo apt update sudo apt install libsendlater4
Description:
send later library
This package contains the send later library which helps implementing the "Send Later" function. . This package is part of the KDE PIM module.
Homepage: http://pim.kde.org/
Version: 4:4.14.10-7
Section: universe/libs