On my systems, I have to scroll (would be down if you have most recent last). What I usually do is after reading new email, I click "Unread email" under Quick Views, then I can see the new ones when they come in with a single click.
Whenever I have my Inbox open & new e-mail arrives, the Inbox count changes (& a chime sounds), but the message does not show in the message list. I have to click on another mailbox (sent, deleted, etc) & then click on Inbox.
How do I get messages to immediately show in the list ?