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Change the Default Mail Client (All Windows)

The setting allows you to change which program is opened and used to send an e-mail messages when you click on a "mailto:" link in a web page.

This tweak can be easily applied using WinGuides Tweak Manager.
Download a free trial now!

Open your registry and find or create the key below.

Create a new String value, or modify the existing value, called "(Default)" and set it according to the value data below.

Exit your registry; you may need to restart or log out of Windows for the change to take effect.

Registry Editor Example
|NameTypeData|
|(Default)REG_SZ"C:\program files\Outlook Express\msimn.exe" %1|
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|HKEY_CLASSES_ROOT\mailto\shell\open\command|
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Registry Settings
System Key: [HKEY_CLASSES_ROOT\mailto\shell\open\command]
Value Name: (Default)
Data Type: REG_SZ (String Value)
Value Data: Mail program command-line

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Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.

Last modified: February 24, 2003