Free File Viewer for Email File Formats | Open EML File Online & More

Upload EML, MSG, OST, MBOX or PST file to view email content online. Open PST file. OST viewer. MBOX viewer online. MSG file viewer. Open EML files. Download file content as images, PDF, DOC or TXT.

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Aspose.Email Viewer App is a fast online email viewer, if you need to read your email from any device and anywhere. Use it to open your message file online, download the email as an image or as an original file. Viewer app shows all content of the message including images.

View emails online as image, PDF, DOC or TXT.

Send the image of an email, which is an easy way to protect it from editing and copying. Viewer app has an easy to use interface which provides you with basic operations to: navigate email pages, zoom email contents, observe images of the email in the navigation menu, download a whole email or the part of an email that you need as image, DOC, PDF or TXT file.

Viewer App is a free app provided by Aspose.Email.

Please, feel free to check our powerful Cloud SDKs and other easy-to-use online Apps.


Aspose.Email Viewer

  • Read emails online. Free online email viewer: view Outlook, Gmail, eM Client, Thunderbird, Apple Mail & Mailbird emails.
  • Open any message file formats: EML, MBOX, PST, MSG, OST.
  • Use Aspose.Email Viewer App online and free to view EML, MSG, PST, OST and open MBOX files.
  • Powerful email viewer alternative for Windows 10, iPad, Android and other devices.
  • Email viewer for 64 bit or 32 bit systems.
  • Use Aspose.Email Viewer App to read emails online.
  • Read messages online.
  • View emails as image, PDF, DOC or TXT.

How to view a document file

  • Click inside the file drop area to upload a document file or drag & drop a document file.
  • Your document file will be automatically rendered for you to view instantly.
  • Download the document file in original, image, PDF, DOC or txt format.
  • If you need another format, you can go to Converter.
  • View and navigate between pages.
  • Set page view zoom-in or zoom-out.
Quick and Easy Viewer

Quick and Easy Viewer

Upload your document and you will be redirected to the Viewer app with great user experience and many more features.

View from Anywhere

View from Anywhere

It works from all platforms including Windows, Mac, Android and iOS. All files are processed on our servers. No plugin or software installation required for you.

Viewer Quality

Viewer Quality

Powered by Aspose.Email. All files are processed using Aspose APIs, which are being used by many Fortune 100 companies across 114 countries.


  • ❓ How can I open email online?
    You can read, view and open emails online using Aspose.Email Viewer. First, you need to add a message file which you want to view: drag & drop your Email file or click inside the white area to choose a file. When Email file is uploaded you can read it online and download as PDF, TXT, DOC and Image.
  • 🗂 Which file formats can I view?
    You can open the following email file formats: EML, MBOX, MSG, PST, OST.
  • 🛡️ Is it safe to open Email using free Aspose.Email Viewer?
    Of course! The download link of result files will be available instantly after uploading the file. We delete uploaded files after 24 hours and the download links will stop working after this time period. No one has access to your files. Email Viewer is absolutely safe.
  • 💻 Can I open Email on Linux, Mac OS or Android?
    Yes, you can view emails using free Aspose.Email Viewer on any operating system that has a web browser. Our Email Viewer works online and does not require any software installation.
  • ✅ Can I use Aspose.Email Viewer in my projects?
    Absolutely! Aspose.Email provides a high-performance API. Using Aspose.Email you can convert, view, edit and process emails in the way you need. You can use one of its SDKs on your platform or use Email Cloud approach, which is safety, fast and reduces the load on your system.

All Supported Viewers

You can view all file formats. Please see the complete list below.