Merge OST to PDF

Regular OST to PDF creates separate PDF files for each email (delivered as a ZIP). Merge OST to PDF combines all cached emails into one single PDF document, making it easier to share and review as one file.

Merging OST to PDF is ideal when you need a single comprehensive document for compliance audits, legal proceedings, email archiving before account termination, or sharing email history with colleagues who don't have access to the original Exchange/Microsoft 365 account.

Emails are merged based on their folder structure and relative path within the OST archive. This typically results in a logical grouping by folder, then chronologically within each folder.

File size and bulk conversion limits depend on your active subscription level. Consult our pricing page for the current limits. If you have too many files, consider converting them seperately. If your file is too large, consider compressing it.

Attachments are converted to PDF and included directly after each email in the merged document. This creates a comprehensive record where each email is followed by its attachments.

If your OST file is too large, consider compressing it through ZIP. This is really simple. Just go to your file library, right-mouse click on your file and select ‘compress in ZIP-file’. Your file size can be greatly reduced, and you can still use the ZIP file on PDFen

Yes, you can upload multiple OST files. All cached emails from all archives will be extracted and merged into a single PDF document.

Converting a file to PDF ensures your document stays consistent and accessible. PDFs lock in formatting, design, and structure, preventing layout shifts that can happen with editable file types. They’re compatible with virtually all devices and operating systems, making them ideal for professional documents, forms, reports, and presentations. PDFs are also easy to distribute; whether through email, downloads, cloud platforms, or QR-codes that let users open a file instantly on their phone.

Our intelligent software minimizes quality loss when converting documents. As such, documents can be converted without having to worry about quality loss for a great number of times.

No; our intelligent PDF software recognizes document layouts and transforms them accurately onto a new file format. Was your lay-out or format not transformed accurately? Consider applying OCR, or applying different customization settings to convert it correctly.

Yes! There are no limits to converting documents, and documents can safely and easily be converted back and forth. Conversion can be handy to edit a PDF document in Word, and later convert it back into an organized PDF format.

To merge PDF documents simply go to our converter, choose the file format you’re merging, and drag and drop the files you want to merge. Then you have the opportunity to edit some settings, press merge, and you’re done! You can download your merged file right away.

Yes, PDFengine offers various means of customizing your (PDF) documents. Consider adding a cover page, applying OCR, or using PDF/A as output.

If the text is not copyable, clickable, or searchable, that means the text is not recognized within the PDF. Try uploading your document onto PDFen and applying OCR. OCR technology will make your text readable. In case it doesn’t work completely in one go: apply OCR a second time.