Issue with Extracting Attachments and PDF Conversion

Hello Team,

I have purchased a full license of GroupDocs and I am currently facing issues while extracting attachments from documents and converting them to PDF.

My requirement is:

  • First, extract all original attachments from the document
  • Then, convert those original attachments into PDF separately

However, I am facing the following problems:

Case 1: MSG / EML files

  • GroupDocs directly converts both the main document and attachments into PDF
  • I lose access to the original attachment files

Case 2: DOCX / XLS / PPT files

  • Attachments are embedded as OLE objects
  • GroupDocs only converts the main document
  • Attachments are neither extracted nor converted
  • I lose both original attachments and their PDF versions

Case 3: PDF files

  • Attachments are embedded inside the PDF
  • GroupDocs does not extract or convert these attachments
  • Original attachments are not accessible

Supported file types in my use case:
pdf, doc, msg, docx, xls, rtf, xlsx, dot, eml, ppt, pptx, dotx, ics

I would like to know:

  1. Is there any way in GroupDocs to extract original attachments from all these file types?
  2. Can we programmatically access attachments before conversion?
  3. Do you provide any solution or API for handling OLE embedded objects and PDF attachments?

Additionally, I found that Aspose provides better support for attachment extraction across formats.

Could you please suggest:

  • Whether this can be handled in GroupDocs
  • Or if switching to another solution is recommended

Looking forward to your guidance.

Thank you.

Best regards,
Sanket