I find that bounce-email thing to be really strange, and I met various annoying issues when trying it. And I noticed in recent weeks that Amazon's bounce email notifications can stop working randomly, but the webhook seems to be consistent. So far the addon has seemed to work well. This is a strange case where the listed email doesn't link to the active account, and lists their name (which is nowhere in their account, so it must have pulled it from the bounce notification), and the email is in brackets, all of which is unusual.
I wish the XF devs would work on basic functionality like this instead of things like native dark mode and the overhaul of the theming system, which to me seem much less important and arguably an unnecessary waste of time.