MalwareForwarder is an Outlook VSTO add-in that makes it easy for users to forward messages to a predefined address with just a single click.
The add-in adds two buttons to the Outlook Ribbon, one to forward Malware, one to forward Spam. You can set a separate forwarding address for each button, or disable either button. By default, the add-in will delete the original message and it will not save a copy of the sent email in the Sent Items folder. You can change either of these settings.
See this page for directions on deploying the add-in using ClickOne: https://docs.microsoft.com/en-us/visualstudio/vsto/deploying-an-office-solution-by-using-clickonce
Note - I haven't been a developer in a very long time, and this is my first attempt at writing anything in C# or writing an Office add-in. Keep that in mind when you use this code.