Convert tnef to eml

  1. Download and install the latest version of Filestar.

  2. Right click on one or more Tnef file(s) on your desktop and select Convert with Filestar.

  3. Type convert to eml in the search box.

  4. Press Convert.

Or let an AI agent do it: filestarcli -i file.tnef -c "convert to eml" (how).

Let your AI agent convert TNEF to EML

Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine.

Install Filestar and add it to your agents:

npm install -g filestar
filestarcli agent install

Then ask your agent:

“Convert the TNEF files in my Downloads folder to EML”

Or run it yourself:

filestarcli -i file.tnef -c "convert to eml"

Runs on your computer, so your files stay on it. Works on Windows, macOS and Linux. 50 free conversions with the npm install, no account needed.

Can my AI agent convert TNEF to EML?

Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.tnef -c "convert to eml" on your computer, so your files stay on it.

Using Filestar With AI Agents → · Download SKILL.md

What is the difference between .tnef and .eml?

Extension
.tnef
.eml
Format
Text
Category
Email
Email
Developer
Microsoft
Microsoft
Description
File generated by Microsoft Exchange email programs such as Outlook; appears as an email attachment for email clients that don't recognize Microsoft's proprietary TNEF format; may cause the text "application/ms-tnef" to appear in the email if the email client does not recognize Microsoft Exchange formatting.
An EML file is an email message saved by an email program, such as Microsoft Outlook or Apple Mail. It contains the content of the message, along with the subject, sender, recipient(s), and date of the message. EML files may also store one or more email attachments, which are files sent with the message.
MIME Type
application/vnd.ms-tnef
message/rfc822

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