You have to copy the /etc/xdg/autostart/org.gnome.Evolution-alarm-notify.desktop file to your home folder by
mkdir -p ~/.config/autostart/
cp /etc/xdg/autostart/org.gnome.Evolution-alarm-notify.desktop ~/.config/autostart/
sed -i "s/NoDisplay=true/NoDisplay=false/" ~/.config/autostart/org.gnome.Evolution-alarm-notify.desktop
and then disable its launch from mate-session-properties (Startup Applications).
Also disable its systemd user services:
systemctl --user mask evolution-addressbook-factory.service
systemctl --user mask evolution-calendar-factory.service
systemctl --user mask evolution-source-registry.service
systemctl --user mask evolution-user-prompter.service
and then reboot.