Yes it's binary. To store all that data in text would be terribly inefficient and impractical, do to look-up times and handling different text encodings. The structure of the .dbx file is not public knowledge and can change at any time. If you want to export your mail then use the built-in export functionality from the File menu in OE, which has nothing to do with C# and is outside the scope of this forum. This posting is provided "AS IS" with no warranties, and confers no rights. Software Design Engineer Developer Division Sustained Engineering Microsoft [My Articles] [My Blog]