Tagging in Emails

Hi
Im having a similar challenge and can’t figure out a solution based on the answer. How do you either tag or use naming conventions to add an interest value based on the topic?

If you use naming conventions, how do you build either a workflow or list where you’re able to do a contains filter? E.g. I want all emails that contains “Red shoes” in the internal email name.

I might be approaching this the wrong way - if you have time to elaborate your answer it would be highly appreciated :slightly_smiling_face: