How can I start a program?

In the start menu under programs the installed tool is available, but there's no executable (.exe) file to start the program.

All tools from outlook-stuff.com are so called com-add-ins. They are registered as dll-file and are directly embedded into Outlook®. These programs therefore can only be started in Outlook® with a program symbol and the menu item ESM-Tools respectively.

Which symbol belongs to the installed add-in you can see on the installation packages or on the download site.