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CoolUtils Mail Viewer MCP
Let Claude read .msg/.eml/.p7m and convert them to PDF
MCP server bundled into CoolUtils Mail Viewer — a 15-year-old Windows tool for opening exotic email formats. Run MailViewer.exe --mcp and Claude can converteml/.msg/.p7m/.mim/.tnef/.olk15/.vcf (+5 more) to PDF/DOCX/HTML/TXT/TIFF with full rendering, pull sender/subject/headers/attachments as JSON, and bulk-extract attachments from folders. Fully local — mail never leaves your machine. Built for DFIR, eDiscovery, paralegal, and IT-admin workflows on Outlook archives and S/MIME-signed mail.
Hi everyone! I'm the maker of CoolUtils Mail Viewer — a 15-year-old Windows app that opens exotic email formats (.msg, .p7m S/MIME, .tnef, .olk15, .vcf and more) that nothing else handles well. We've just bundled an MCP server inside the same binary, so Claude Desktop / Code / Cursor / Cline can call it directly: convert any email file to PDF/DOCX/HTML preserving inline images and headers, pull metadata as JSON, or bulk-extract attachments. Everything runs locally — mail never leaves your machine, no SMTP/IMAP/Graph involved. Built for the people doing this work the hardest way: paralegals reviewing case correspondence, DFIR analysts triaging Outlook archives, IT admins migrating mailboxes. Now you can describe what you need in plain English and let the agent figure out the parameters. Repo with README + Claude config snippets: https://github.com/AlexBuzaev75/... — happy to answer questions about the MCP implementation or format edge cases!
I love that everything runs locally too, especially for legal and security workflows where privacy matters a lot. The MCP integration is a good feature.
About CoolUtils Mail Viewer MCP on Product Hunt
“Let Claude read .msg/.eml/.p7m and convert them to PDF”
CoolUtils Mail Viewer MCP was submitted on Product Hunt and earned 9 upvotes and 2 comments, placing #52 on the daily leaderboard. MCP server bundled into CoolUtils Mail Viewer — a 15-year-old Windows tool for opening exotic email formats. Run MailViewer.exe --mcp and Claude can converteml/.msg/.p7m/.mim/.tnef/.olk15/.vcf (+5 more) to PDF/DOCX/HTML/TXT/TIFF with full rendering, pull sender/subject/headers/attachments as JSON, and bulk-extract attachments from folders. Fully local — mail never leaves your machine. Built for DFIR, eDiscovery, paralegal, and IT-admin workflows on Outlook archives and S/MIME-signed mail.
CoolUtils Mail Viewer MCP was featured in Productivity (653.8k followers), Developer Tools (514k followers), Artificial Intelligence (471k followers) and GitHub (41.3k followers) on Product Hunt. Together, these topics include over 334.8k products, making this a competitive space to launch in.
Who hunted CoolUtils Mail Viewer MCP?
CoolUtils Mail Viewer MCP was hunted by Alexander Buzaev. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Alexander Buzaev