After I realized that Outlook's built-in filtering had a ridiculously low circa-1985 limit to its code, I just built a Python script to file things in my inbox.

After I realized that Outlook's built-in filtering had a ridiculously low circa-1985 limit to its code, I just built a Python script to file things in my inbox. I haven't bothered making it user-friendly or "smart", however - it just goes by rules expressed in a yaml file.