.tnef

File Type Generic IconTransport Neutral Encapsulation Format
File Format Proprietary (Microsoft)
Usage Open manually
Rank ★ ☆ ☆  Uncommon
Description

Contains rich text formatting used in Microsoft Exchange e-mail messages, such as bold, italics, underlining, etc; application/ms-tnef may appear if your e-mail client does not support MS Exchange formatting.

Open With
Windows

IconMicrosoft Outlook

IconMicrosoft Outlook Express

macOS

IconApple Mail

IconMicrosoft Outlook for Mac

Updated 2007
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