Registry Guide for Windows

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Registry tweaks, tricks & hacks to optimize, enhance and secure Microsoft Windows.

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(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.
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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.


		(Default)	REG_SZ	"C:\program files\Outlook Express\msimn.exe" %1


	HKEY_CLASSES_ROOT\mailto\shell\open\command

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

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