| Subject | English | German |
| commun., IT | electronic mail prototype system | Prototyp für elektronische Post |
| comp., MS | electronic mail system | elektronisches E-Mail-System (A utility that allows the user to send and receive e-mail) |
| commun., IT | electronic mail system | elektronisches Postsystem |
| commun., IT | electronic mail system | E-Mail-System |
| comp. | electronic mail system | elektronisches Briefkastensystem |