click view>folders>unified folders

Thank you for your answer. I already did that before I asked the question. When I click on unified folders I see all the inboxes of the different accounts in separate folders. Thanks again Stefan

When collapsed, the inbox shows all in a virtual folder, which is what is being achieve by the smartphone app.

Thank you for your answer. I have 2 accounts and when I collapse both in the unfied folder view I still see both accounts separated (picture) . The upper inbox does not show the content of the lower inbox. I hope I did the right thing with the unified folder. Best regards Stefan

sometimes the setup fails. highlight the unified folder, rightclick, select properties. then click 'choose' and put tick mark on the inbox of each account . That should fix it. I suggest repeating for the other unified folders: draft, sent, trash - to ensure all are working properly.