I made the original post you’re replying to, and I agree. Web gmail + shortcuts is actually a great service. I think most people who are fairly satisfied with their email and just want to improve some would be best served starting there.
Personally I found superhuman just better enough that it’s worth it, but that’s because I wasn’t very good at managing email in a web interface, and I like the command line approach in Superhuman.
It puts them into other, and it has a faster unsubscribe interface, though it doesn’t already work. When you delete a message you can trash or mark done all from the same sender, so that is nice.
For that use case you might look into Sanebox. It runs on servers and I think has a good reputation for that kind of filtering.
Personally I haven’t had too much issue with promotional email though, so I would take my comments here with a grain of salt. I can’t really speak to it.
The other folder filtering is decent, but I imagine gmail is also good at that with promotions.
Personally I found superhuman just better enough that it’s worth it, but that’s because I wasn’t very good at managing email in a web interface, and I like the command line approach in Superhuman.