Install d-push by entering the following commands in the terminal:
sudo apt update sudo apt install d-push
open source implementation of the ActiveSync protocol
D-push is debian's rebranded version of zarafa's z-push. It is an implementation of the ActiveSync protocol which is used Mobile, iPhone, Sony Ericsson and Nokia mobile devices. With D-push any groupware can be connected and synced with these devices. . This is a transitional package. It can be safely removed.