Someone sent you a .msg file and your Mac — or your Outlook-less Windows box — refuses to open it. You don't need a Microsoft 365 subscription to read one message. Drop the file below: the full header table, recipients, date and body render right in your browser, parsed locally.
Like what you see? The same click converts the message to a clean PDF for printing or archiving.
MSG is Outlook's native save format: a binary container that stores the message as a property database. Windows users with Outlook double-click and it opens; everyone else gets a file their OS can't read. Webmail sometimes accepts them, sometimes mangles them, and uploading business email to a random web viewer is its own risk.
This viewer parses the container itself — no Outlook, no Windows, no upload. Sender entries stored as Exchange directory addresses are resolved to real SMTP addresses, RTF bodies come out as readable text, and attachments are listed with sizes.
Most people who need to read a .msg file eventually need to file, print or forward it as something universal. That is what the PDF route is for: the same parsed message typesets into a paginated PDF with full headers and an attachment manifest. Single files convert free; batches of up to 100 are a one-time $19.
Yes — viewing and previewing any file you drop in is free and unlimited. Only the batch PDF export is a paid feature beyond the free tier's first 5 files per batch.
Nested messages are listed in the attachment manifest; opening them recursively is on the roadmap.
Parsing works anywhere the page loads, but the PDF preview inside the page is best on a desktop browser.