(Don't worry this isn't a problem for once...)
I was registering a new Samsung account today and it had to send me a verification email. So I rolled up my sleeves ready to rummage around in the email content trying to find it and copy it out with VoiceOver. But no, the email didn't seem to arrive. Instead, Safari asked me if I wanted to automatically enter the code into the form. I said yes and it asked if I wanted to delete the email, so I said yes again. And that was it, I was in.
Later, because the Samsung account thing is horrible, I had to verify myself again. And I just selected to enter the code and that was it. No email, nothing.
How long has this been a thing? Maybe it's only for particular OTP emails that have been setup in the right way.
I may never see it again anywhere else but I thought it was actually really neat and worked nicely with VoiceOver too. It's not as if I was even using an Apple email address.
Is this an Apple Intelligence thing? Or maybe it's always done it?