How to select all emails in the iOS 18.2 Mail app?

I can't see any good way to select all emails in the iOS 18.2 Mail app. I think you can do it by scrolling down with two fingers, but that's a pain when you have hundreds of emails. In the older versions of Mail I would normally Select All then Mark as Read which made it easy to see where I left off the last time.

Am I missing something?

TIA

[Re-Titled by Moderator]