Ok I see… not saying is great but those are ads. Not prioritized emails. Like it's an ad that looks like an email… yes I agree it's terrible… but the emails are in the expected order.

I guess I have never seen it because well as you seem to indicate it is recent. And I mostly use the PC for emails and there I have AdBlock so yeah there neither.

I have check the phone and I saw some ads but they don't look like emails ata all they are like bigger it's easy to see the difference but they weren't in-between so maybe are the old design.

In any case it's mostly a free service, except if go over the limit and similar, with quite some costs and with the current environment where ads revenue is going down and money isn't as cheap as it used to be, Google and other companies are all trying to squeeze whatever they can, so everything is going shit…