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Source Change Default Mail Client In Windows XP

One of the biggest problem of multi-user Windows XP computer systems is the lacking feature of setting a default mail client for every user. Windows XP only supports one default email client by default which makes things a tad complicated if the users who work with the operating system use different clients. The default email client is the program that gets opened when the user clicks on a mailto link on a website, email or document. It will also be launched by third party programs that make Messaging Application Programming Interface and by the Send To Email option in Windows Explorer.
Probably one of the most comfortable ways of allowing users to set their own default mail client in Windows XP is the free and portable software program DefaultMail.