tnef

A .NET MIME creation and parser library with support for S/MIME, PGP, DKIM, TNEF and Unix mbox spools.

Fork of LookOut (fix version)

a TNEF decoding library written in python, without external dependencies

Go library to extract body and attachments from TNEF files

Ruby wrapper for "tnef"

TNEF files (e.g. winmail.dat) data extractor

NodeJS project that will parse Transport Neutral Encapsulation Format (TNEF) files

A basic TNEF parser written in pure Rust

Automatically convert TNEF (winmail.dat) attachments into MIME format

Chrome Extension for Gmail to show "winmail.dat" files automatically

A little tool connecting to the Zammad API, downloading new winmail.dat-Attachments and adding the containing attachments as a new article.

Outlookのwinmail.dat（TNEF）から添付ファイルを取り出すWindowsツール。インストール不要の単一EXE / Extract attachments from Outlook winmail.dat (TNEF) files — a single portable Windows executable.

Thunderbird MailExtension to detect and parse winmail.dat (TNEF) attachments locally for direct viewing and extraction.

Go library that reads .eml, Outlook .msg and winmail.dat composed by an attacker — header order and duplicates kept, addresses parsed before display names are decoded, every repair, guess or cut reported as a warning. MS-CFB, compressed RTF and TNEF are read in-house, with no community dependencies

A simple Python Windows desktop application to decrypt winmail.dat file in e-mail (made with Flet)

Portable offline TNEF (winmail.dat) attachment extractor for Windows, built with .NET 10 and WPF.

A fast, private .msg and .eml viewer that runs entirely in your browser — msglens.app

Agent skill for Microsoft Outlook for Claude Code, Cursor, Codex and other SKILL.md agents: inspect .msg, .eml, winmail.dat and .ics offline, triage phishing, save attachments safely, draft mail with Microsoft Graph.

View and convert .msg, .eml, winmail.dat, .pst/.ost, .olm and mbox files locally in your browser — no upload.

Quick Look preview for winmail.dat (TNEF) attachments in Apple Mail and Finder