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How do I get mailto hyperlinks in IE to open OE, when I click them?
Go to View (or Tools) | Folder Options | File Types in Windows Explorer and check the values for URL:MailTo Protocol (click edit, open, edit). If that type does not exist, then create a new type with the description being "URL:MailTo Protocol". The values should read:
"C:\PROGRAM FILES\OUTLOOK EXPRESS\MSIMN.EXE" /mailurl:%1
(Check the path to msimn.exe to make sure that is correct)