- DOC (Word document)
- DOCX (Word 2007 document)
- XLS (Excel document)
- XLSX (Excel 2007 document)
- ODT (OpenOffice text document)
- ODS (OpenOffice spreadsheet document)
- RTF (generic text format)
- TXT (generic text format)
The documents are attached just like attaching images.
For now, I have set the size limit to 5 Mb, until I see how much the feature is used. Please leave your comments below.