sendmail.dll - advertising company

I see an advertising company in the context menu of this application and I want to remove it but can't.
Can't find a download for version 1.48 with no behavioral tracking company context menu's.
ixquick.com

The details of the shell extension that might cause the problem:

Shell Extension Name:
Filename:	sendmail.dll
Description:	Send Mail
Company:	Microsoft Corporation
Product Name:	MicrosoftR WindowsR Operating System
File Version:	6.00.2900.5512 (xpsp.080413-2105)
CLSID:	{9E56BE61-C50F-11CF-9A2C-00A0C90A90CE}

If you think that you have similar problem in your system, you can try to fix the problem by disabling the specified shell extension. In order to do that, simply follow the instructions below:

1. Download and run the ShellExView utility from this Web page.
2. Find the right shell extension according the details specified above.
3. Select this shell extension and press F7 to disable this extension. After disabling the shell extension, check if the problem still occurs. If the problem still occurs, you should enable back the shell extension by pressing F8, and then try to search for another shell extension that might cause your problem.

This shell extension problem was reported by Googstapo