There's a known issue when using drag and drop from Alfresco to convert an Office file to PDF format, and adding it to an email as a link, where there's an option to automatically link to a PDF version of that document. This feature doesn't currently work with SAML authentication. However, there's a workaround to achieve the same functionality:
- Convert the document you want to link to as a PDF first, using the available context menu action
- Drag and drop the PDF version as a link to the email