macos mail

I'm not sure if this is just me... it may well be that I'm missing a setting, but whenever I have a long back and forth email chain with someone, it seems to get increasingly difficult to find the latest message in the long chain. The message preview might show "message from Jim today at...

Anyone else having this issue? Nothing is filtering. Everything is ending up in my Inbox, and it's not funny... Do I have to set up filtering again? Grrr... Thanks...

I am currently using the free edition of Google's G Suite for custom-domain email. However, Google is discontinuing this product and I do not wish to subscribe to their paid replacement plan. (I'm going to switch over to iCloud+ which now has support for custom domains!) As such, I want to...