Btw since about 3 years I'm using lots of gmail filters ( like around 200+ and counting ) to separate mails to different labels and it kinda works.

I have lots of labels for each service that I use. They all include unicode symbol character, to visually separate it from untagged mails. For example " DHL", " UPS", " fitbit", "︎ Uber", "︎ Austrian Airlines", " O2" and others.

The logic is all e-mails coming from the specified domain e.g. dhl.com goes to the DHL label. Then another filter that takes newsletter@dhl.com which goes to newsletters and skips the inbox. This way I was able to handle the e-mail clutter and not rely on 3rd party service that I might be afraid will reduce my privacy concerns.

P.S. Ha. Bummer HN trimmed my unicode symbols anyway here is a screenshot : https://imgur.com/fpX8OLH