| English | eng-000 |
| Transport Neutral Encapsulation Format File | |
| filename extensions | art-335 | tnef |
| filename extensions | art-335 | tnf |
| TechTarget file types | art-336 | TNEF-Transport-Neutral-Encapsulation-Format-File-Microsoft-Corporation |
| TechTarget file types | art-336 | TNF-Transport-Neutral-Encapsulation-Format-File-Microsoft-Corporation |