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Enabling Yahoo Email for the MailTo Protocol

Modified on Fri, Feb 06, 2009, 11:39 PM by Administrator Categorized as Windows Registry


Frequently when browsing the internet, you encounter a link that, when clicked, opens up your default email client with a new email to specific address. If you want such links to refer to your Yahoo Mail account, you need take the following steps.


1. Manually make the following entries into the Windows Registry. The branch HKLM\Software\Clients\Mail should already exist, but you will probably need to create the necessary subkeys before creating the registry entries.

HKEY_LOCAL_MACHINE\Software\Clients\Mail\Yahoo Email
(Default)="Yahoo Email"

HKEY_LOCAL_MACHINE\Software\Clients\Mail\Yahoo Email\Protocols\mailto\Shell\open\command
(Default)="C:\Program Files\Internet Explorer\iexplore.exe\" http://us.f130.mail.yahoo.com/ym/Compose?To=%1

2. On the Control Panel, double click the Internet Options icon. This will open the Internet Properties dialog. 3. On the Properties tab, in the Internet Programs frame, for your Email program specify Yahoo Email

Note that when the new email is created, the recipient's address will have a mailto: prefix. Simply delete this prefix before sending the email.

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