This comes up a lot when people are moving away from Outlook or switching to a mail client that doesn't support MSG files natively. Thunderbird, Apple Mail, and most Linux-based clients run on EML, so if your archive is full of MSG files, you need a reliable way across without losing headers, attachments, or formatting.
The short answer is yes, safe tools exist. The
Cigati MSG File to EML Converter is one I'd point people toward. It converts in bulk, preserves the original folder structure, and doesn't touch your source files during the process — so if something goes sideways, your originals are exactly where you left them. Attachments, inline images, and email metadata all carry over cleanly.
No Outlook installation required either, which matters if you're working on a machine that doesn't have it licensed.
For anyone who wants a walkthrough before committing, the guide covers the full process of
converting MSG files to EML with format-specific details and what to watch for when handling large archives.
Solid option if you need something dependable rather than a half-working free utility.