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CoolUtils Mail Viewer MCP Server

@AlexBuzaev75

Repository

Basic information

Category

Other

Transports

stdio

Author

AlexBuzaev75

Submitted by

AlexBuzaev75

About CoolUtils Mail Viewer MCP Server

Read, convert, and extract attachments from .eml, .msg, .p7m, .mim, .tnef, .vcf, .olk15 and 5 other email formats. Built into CoolUtils Mail Viewer for Windows. Activate with MailViewer.exe --mcp.

#email#eml#msg#outlook#pdf#conversion#attachments#forensics#ediscovery#windows

CoolUtils Mail Viewer MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "mailviewer": {
      "command": "C:\\Program Files\\CoolUtils\\CoolUtils Mail Viewer\\MailViewer.exe",
      "args": [
        "--mcp"
      ]
    }
  }
}

CoolUtils Mail Viewer MCP Server tools

3

convert a mail file to any output format using the full Mail Viewer rendering engine. PDF/DOCX output preserves embedded HTML, inline images, attachment previews, and headers.

return sender, To/CC/BCC, subject, date, RFC headers, body, and attachment metadata as JSON. Does not modify the source.

bulk-save all attachments from a message into a target folder.

Overview

What is CoolUtils Mail Viewer?

It is a Model Context Protocol server integrated with CoolUtils Mail Viewer that lets Claude, Cursor, Cline, and any MCP‑compatible AI agent read, convert, and extract attachments from email files. The server supports source formats such as .eml, .msg, .mim, .p7m, .vmbx, .tnef, .mapixml, .olk15, .vcf, .contact, and .3uc, and can output to pdf, html, txt, doc, rtf, tiff, jpg, png, bmp, emf, eml, and xps.

How to use CoolUtils Mail Viewer?

Download CoolUtils Mail Viewer from the official website (Windows, 30‑day free trial). Add a block to your MCP client configuration (Claude Desktop, Claude Code, Cursor, Cline) pointing to the MailViewer.exe path with the argument --mcp. Restart your client. All processing runs locally – no email files are uploaded.

Key features of CoolUtils Mail Viewer

  • Converts email files to multiple output formats
  • Returns full mail metadata as JSON
  • Extracts and saves all attachments to a folder
  • Preserves embedded HTML, images, and headers in PDF/DOCX
  • Provides three dedicated MCP tools
  • Requires no external API or cloud service

Use cases of CoolUtils Mail Viewer

  • Converting .eml or .msg invoices into searchable PDFs
  • Reading Outlook .msg and Apple .olk15 files in a chat interface
  • Batch extracting attachments from a folder of email messages
  • Inspecting RFC headers and sender/recipient details programmatically

Frequently asked questions

1

What email formats can it read?

It can read .eml, .msg, .mim, .p7m, .vmbx, .tnef, .mapixml, .olk15, .vcf, .contact, and .3uc files.

2

What output formats are supported?

Output formats include pdf, html, txt, doc, rtf, tiff, jpg, png, bmp, emf, eml, and xps.

3

Does it require an internet connection?

No. Everything runs locally using the CoolUtils Mail Viewer rendering engine; mail files are never uploaded.

4

Is there a free trial?

Yes. CoolUtils Mail Viewer offers a 30‑day free trial for Windows.

5

What MCP tools are available?

Three tools: `convert_mail` (convert to any supported output format), `get_mail_info` (return sender, To/CC/BCC, subject, date, RFC headers, body, and attachment metadata as JSON), and `extract_attachments` (bulk‑save all attachments into a target folder).

Comments

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