Mozilla Suite : Issues : Integration
From MozillaZine Knowledge Base
Why doesn't clicking an email link open my default mail client, such as Outlook Express?
The Mozilla Suite is an integrated suite of applications designed to be used together. Usually "mailto:" links in web pages will open in Mozilla Mail, web links in an email message will open only in Mozilla Browser, "irc:" links open in Chatzilla (Mozilla's Internet Relay Chat client), etc. However, this integration can be removed:
In Mozilla, * type about:config in the browser's Location Bar. * Right-click (control click on Mac OS) in the grid and choose New -> Boolean. * Type network.protocol-handler.external.mailto for the name and true for the value.