1639 Outlook Express Message Database Email Outlook Express was an email program that was included with versions of Microsoft Windows prior to Windows Vista. Outlook Express saved messages in .dbx files, with each file containing the contents of an Outlook Express folder. 178 National Library of New Zealand / National Library of New Zealand 23 Dec 2015 23 Dec 2015 fmt/838 PUID dbx File extension 1193 Outlook Express Message Database 4 byte magic, 4 byte file type, 20 byte unknown but always present. File format is detailed here: http://oedbx.aroh.de/ 1 Absolute from BOF 0 0 CFAD12FEC5FD746F66E3D1119A4E00C04FA309D405000000050000