| EMS | Electronic/Enhanced Message Service |
| EMS | Enhanced Messaging Service |
| ESP | Enhanced Service Provider |
| ESDP | Enhanced Service Discovery Profile |
| EPSCS | Enhanced Private Switched Communications Service |
| SMS | Short Message Service |
| MSR | Message Service Routine |
| MMS | Multimedia Message Service [engl.] Multimedia-Übertragungen mittels Mobilfunk |
| MARS | Message Archiving and Retrieval Service |
| SMSC | Short Message Service Center |
| SMSCB | Short Message Service Cell Broadcast |
| MHS | Message/Mail Handling Service/System |
| ERMES | European Radio Message Service/System |
| EDP | Enhanced Dot Pitch |
| EON | Enhanced Other Networks Verkehrsfunk |
| EATA | Enhanced AT Bus Attachment |
| ES | Enhanced Security |
| SEL | Security Enhanced Linux |
| EVP | Enhanced Virus Protection |
| ECD | Enhanced Color Display |
| READSL2 | Reach Enhanced ADSL2 |
| CHEF | Chelation-Enhanced Fluorescence |
| EROS | Enhanced Return Of Security |
| PEM | Privacy Enhanced Mail |
| ERLL | Enhanced Run-Length Limited |
| ER | Enhanced Radiation [Neutronenwaffe] |
| EVD | Enhanced Versatile Disc |
| EVA | Enhanced Video Adapter |
| EPP | Enhanced Parallel Port |
| ERW | Enhanced Radiation Weapon |
| ECD | Enhanced Colour Display |
| ECF | Enhanced Connectivity Facility |
| ESP | Enhanced Serial Port |
| EFR | Enhanced Full Rate |
| EMF | Enhanced Meta File |
| ESI | Enhanced Serial Interface |
| EGA | Enhanced Graphics Adapter |
| EMB | Enhanced Master Burst |
| EDR | Enhanced Data Rate |
| ESI | Enhanced Serial Interface |
| ESDRAM | Enhanced Synchronous Dynamic RAM |
| LEI | Laser-Enhanced Ionization |
| LEAP | Low-power Enhanced At Portable |
| EDC | Enhanced Data Correction |
| ECM | Enhanced Coprocessor Mount |
| LEPS | Lancom Enhanced Passphrase Security |
| EUC | Enhanced/Extended UNIX Code |
| EGC | [Inmarsat] Enhanced Group Call |
| ESMD | Enhanced Storage Module Device |
| EGA | Enhanced Graphics Adaptor/Array |