Hey, Justinchin8789.
I see you're only receiving emails when you quit the Mail application then reopen it on your MacBook Pro. I'd be wanting to receive them automatically myself, and I'll be happy to help you with this.
Mail Help - Set Mail preferences -- Specifically adjust the "Check for new messages:" option. Make sure it's set to a short enough interval for your needs.
Set Mail preferences
Use Mail Preferences to set or change options for the email accounts you use in Mail, and for working with messages and mailboxes. Choose Mail > Preferences, then click a preference pane to view options:
General: Change settings that range from how often to get messages, to the kinds of messages to include when searching for messages in Mail.
If you can't send or receive email on your Mac -- If your setting was correct, follow the steps in this article.
Let me know how that goes and thanks for using Apple Support Communities!