email seems to have a "promotions" and "focused" main inbox filters on all apps. But, is but intuitive and usually makes it more complicated to find your stuff. What if a premium feature (yeah, I'm elitist! I've loved Textra for years!!) is a "focused" folder?

All messages go to the same place, "texts" or whatever. Users can select conversations to move to their "real conversations" (or whatever!?) to a special area. the special area is where user's active conversations live. it can have some sort of extra notification layer. but the old og inbox then becomes the dying ground for "here's your one time code", "your Verizon bill is different again this month", "annoying family", etc.

giving users more focus and control of their time. concept-wise, perhaps the main inbox as it is designed is the special one but it auto bumps the message to the other inbox if it isn't preexisting, truly giving the new inbox the lowered priority notifications and where everything "goes first" from the user's perspective.