| elog | McAffee Firewall Log |
| elp | eXe Learning Package File |
| elp | Elluminate Plan! Session Plan |
| elpx | Elluminate Plan! Session Plan |
| elr | MDSS Electronic Laboratory Report |
| els | MSC Patran Element Result |
| elt | NEPLAN Topology Data |
| ely | Elyse Database |
| elz | Crossword Power Tools Diagrams+ Library |
| em | PCEM Electromask Data |
| em | Adobe Encore Menu Template |
| email | Microsoft Outlook Express Junkmail Data |
| emap | Genetica Environment Map |
| emar | Emissions Model ASCII Record |
| emb | Wilcom Embroidery Data |
| embl | ENA EMBL Sequence |
| embr | Emissions Model Binary Record |
| emc | Striata Encrypted E-mail Attachment |
| emdl | AutoDesk Softimage Export Model |
| emf | EES Macro Data |
| emg | Delsys EMGworks Data |
| emi | WeintekHMI EasyBuilder 8000 EMI File |
| emk | PCEM Electromask Data |
| emlx | Apple Mail Message |
| emlxpart | Apple Mail Message Attachment Data |
| emm | EARS Mail Merge Definition |
| emn | Pro/ENGINEER ECAD IDF File |
| emo | Miranda IM Emotions |
| emrg | E-Prime E-Merge 1.x File |
| emrg2 | E-Prime E-Merge 2.x File |
| ems | eMachineShop Data |
| emu | IRMA 3270 Emulation Setup Data |
| emu | EMU Speech Database |
| emulecollection | eMule Data |
| en2 | Articulate Engage Compressed Data |