Burster of Bubbles, Destroyer of Dreams.
Just imagine the red offboard up here. I'll create it Real Soon Now...
Yes, I know a proper 18XX tile should have a tile number.
You might also turn Conversation View OFF (in general Settings) so that emails are not threaded.
Oh! I've been begging for a way to turn Conversation View off since it was introduced, I'm so happy that it's available now!
It would be better if I could control it on-the-fly (i.e. search for all email from my sister, with messages displayed in chronological order) without completely disabling the sometimes-useful feature, but this is so much better than nothing!