Android · No App Required
Android has no built-in way to open .msg files. Here are three ways to get into one — including the fastest, which needs no app at all.
Convert It to PDF InsteadNo app install, works right in your phone's browser, and a PDF opens natively on every Android device.
If you have the Outlook app installed and signed in to the matching account, you can open the file from there.
Several apps on the Play Store can read .msg files, though most are ad-supported or limited without a paid tier.
No app to install — it works in Chrome, Safari, or whatever browser your Android phone already has.
Select it from Downloads, Google Drive, or wherever it was saved on your device.
Android opens PDFs natively — no extra app, no sign-in required for your first 3 conversions.
No. Android has no built-in app for the .msg format, which is specific to Outlook. You'll need the Outlook app, a third-party viewer, or convert it to PDF.
No — converting the file to PDF in your browser is the only method here that needs nothing installed.
No, attachments convert along with the email body and stay in the PDF.
Treat an unexpected .msg file the same as any unexpected attachment — only open it if you trust the sender.