1. Aspose.Email
  2. Applications
  3. Viewer
  4. OST
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Service Free Free (registered users) Premium Business
File Size Limit 1 Mb 5 Mb 50 Mb Custom
Batch Files Max Count 2 10 50 Custom
Uses Per Day 5 10 Unlimited Custom
Ad Free App Experience

OST reader OST reader

Upload OST file to view the contents and read message online as images. Download uploaded mail as PDF, TXT, DOC or image.

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Drag and drop file(s) here

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The OST reader is the application to open OST file online.
The file is uploaded to the server, where we get all the necessary information from it. Our software allows you to read not only the list of recipients, the subject, and the body of the letter. We can also read the list of attachments, various service properties, headers, hidden recipients, etc. As a rule, most users do not need service information, so our OST reader application does not display them. But you can use our other apps to display service metadata, headers, and more. See the list of the applications available at the top of the page.
After the file is uploaded to the server, our online OST viewer will open. All messages contained in the file will be displayed sequentially, one after another. Each letter will be displayed on a separate page. At the top of the page, you can see the sender and recipients of the email, the subject of the email, and, if available, a list of attachments. Below, you can view the text of the letter. If the letter has HTML markup, the program will ensure the correct display of formatting, images, etc.
One of the benefits of OST file viewer is pagination. We immediately break the text of the letter into pages so that users can immediately evaluate in what form it can be printed. The viewer also provides a button to immediately print OST file.
After reviewing the contents of the letter, you can also download it as a PDF document or transfer it to our letter converter application to save it in any other format convenient for you.
We are constantly working to improve our apps. In the near future, we also plan to significantly rework our online OST viewer.

How to open OST file

  1. Click inside the file drop area to upload a document file or drag & drop a document file.
  2. Your document file will be automatically rendered for you to view instantly.
  3. View and navigate between pages.
  4. Set page view zoom-in or zoom-out.
  5. Print the document using print button. Or download the document file in original, image, PDF, DOC or txt format.
  6. If you need another format, you can go to Converter.

FAQ

How do I open .OST files for free?

Start OST reader and drop your file to the File drop area. The OST file will be opened immediately.

How do I open OST file in PDF?

Open OST file in the free online OST reader. Click Download button and choose the PDF format. The file will be converted to a PDF document and downloaded immediately.

What browser should I use to view OST files?

OST reader is supported by most modern browsers like Chrome, Edge, Safari, Firefox.

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 Email Reader 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 Cloud approach, which is safety, fast and reduces the load on your system.
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