Searchable File Formats

The following formats of attachment contents are searched:

Microsoft Word
Windows:
Word 95 / 97 / 98 / 2000 / 2002(XP) / 2003 / 2007 / 2010 / 2013 / 2016
Mac OS:
Word 98 / 2001 / 2004 / 2008 / 2011 / 2016
Microsoft Excel
Windows:
Excel 95 / 97 / 2000 / 2002(XP) / 2003 / 2007 / 2010 / 2013 / 2016
Mac OS:
Excel 98 / 2001 / 2004 / 2008 / 2011 / 2013 / 2016
Microsoft PowerPoint
Windows:
PowerPoint 95 / 97 / 2000 / 2002(XP) / 2003 / 2007 / 2010 / 2013 / 2016
Mac OS:
PowerPoint 98 / 2001 / 2004 / 2008 / 2011 / 2016
Microsoft Visio
Visio 2002(XP) / 2003 / 2007 / 2010 / 2013 / 2016
ODF (OpenOffice.org, LibreOffice, and so on)
1.1 / 1.2
Writer (document file)
Calc (spreadsheet file)
Impress (presentation file)
OpenOffice
3.0 / 3.1 / 3.2 / 3.3
LibreOffice
3.4
Acrobat
4.0 / 5.0 / 6.0 / 7.0 / 8.0 / 9.0 / X / XI / DC
PDF
1.2 / 1.3 / 1.4 / 1.5 / 1.6 / 1.7
PDF 1.0 and 1.1 are not supported.
JUSTSYSTEM Ichitaro
Versions 5 to 13 / 2004 to 2015

Microsoft XML Paper Specification (XPS)
1.0
Rich text
RTF 1.0 to 1.9
Text file
Files that are encoded by the following character encodings:
JIS (ISO-2022-JP) / EUC-JP / Shift JIS / UTF-8 / UTF-16
Markup language
HTML / XML / SGML