Outlook web addin save the mail and lauch a program

Question

I had a VSTO in Outlook which saves the the selected email into a Temp folder and launchs then an exe to handle the mail.

Now, we want to create an addin in Outlook web app. Is there a way to save the selected email and reuse out exe ? how to launch an exe loccaly from web addin ?

Thanks

Answer 1

Web addins have no access to the local file system and cannot launch executables.

The best you can do is let the user download the file. If your app is registered to handle file extension of the file you provide, the user can then launch the app.