On a Windows 7 client with office 2010 send to mail not working. So I set in default programs Outlook as default and now working. How I can set this option trough Group policy?

Hi,

We can set the default mail client by modifying the following registry key:

HKEY_LOCAL_MACHINE\Software\Clients\Mail

Click the 'Mail' key, you can see that the 'default' value on the right is what sets the default email client.

Try updating the key for all users via a login script.

Or, we can create a custom .adm template to do it. For detailed information, please have a look at the following KB article:

https://support.microsoft.com/en-us/kb/2008044

Note: Although this KB article applies to Outlook 2003 and Outlook 2007, you can also use the method for Outlook 2010.

Hope this helps.

Regards,

Steve Fan
TechNet Community Support