Convert mbox to mhtml

  1. Download and install the latest version of Filestar.

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

  3. Type convert to mhtml in the search box.

  4. Press Convert.

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

Let your AI agent convert MBOX to MHTML

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 MBOX files in my Downloads folder to MHTML”

Or run it yourself:

filestarcli -i file.mbox -c "convert to mhtml"

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 MBOX to MHTML?

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

Using Filestar With AI Agents → · Download SKILL.md

What is the difference between .mbox and .mhtml?

Extension
.mbox
.mhtml
Format
Text
Binary
Category
Email
Developer
Developer
Netscape
Microsoft
Description
An MBOX file is an email mailbox saved in a mail storage format used for organizing email messages in a single text file. It saves messages in a concatenated format where each message is stored after another, starting with the "From" header. MBOX files were originally used by Unix hosts but are now supported by other email applications, including Apple Mail and Mozilla Thunderbird.
MHTML, short for MIME HTML, is a file format that archives web pages. The format combines HTML code, images, JavaScript, and other resources into a single file using MIME type multipart/related. This method of encapsulating a complete webpage (or set of webpages) in a single file makes MHTML files convenient for saving, sharing, and viewing web content offline. MHTML files typically have the extension .mhtml or .mht and can be opened by various web browsers.
MIME Type
application/mbox
application/x-mimearchive

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