Has anyone figured out a way to get the email client to actuall fetch emails from all accounts while under the "All Inbox" category?

The icon shows it is checking but it seems more like a local refresh as it is not checking the server for new messages. I check 2 Pop accounts that don't push so it would be nice if I didn't have to go to each one manually one at a time when I want to check for messages.

Send and receive all option has only been standard for like a decade. Also not being able to specify leaving messages on the server, pulling headers only or specifying attachment size to automatically download is annoying.