No. Custom actions are .dlls created with Extended MAPI and either C++ or
Delphi.

With VSTO, however, you should create an Outlook add-in to accomplish your
goal without involving the Rules Wizard.
--
Sue Mosher, Outlook MVP
Author of Microsoft Outlook 2007 Programming:
Jumpstart for Power Users and Administrators
http://www.outlookcode.com/article.aspx?id=54


"Liu Peng" wrote in message
...
I need a custom action which will be used in Rules Wizard "Perform a custom
action", this custom action will send email's attachments to some other
system.

Is it possible to use VSTO to create this custom actions? If so please
provide some reference resource.

thanks.