Daimler AG
Daimler AG uses the EMS/MAIL-API to enable mainframe applications that previously sent Emails via MEMO/API to do so even after the Nexus MEMO has been phased out. This means that established processes remain unchanged in operation even after the system change.

Among others, the following companies also use the EMS/Mail-API:
AXA Services Germany GmbH
BRUNO BADER GmbH + Co. KG
Commerzbank AG
Hapag-Lloyd AG
Provinzial Rheinland Versicherung AG
SIGNAL IDUNA Lebensversicherung a.G.