In general, Outlook uses a single mailbox no matter how many accounts you
have. There are exceptions, though. IMAP and HTTP accounts each have their
own mailbox (message store).
If you want distinct mailboxes for POP or Exchange accounts, you'll need to
set up distinct mail profiles for each.
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.