Hi, I am new to Mac computers. We recently purchased an iMac and I am having some issues with MacMail. I was able to setup our email with no problem, but I am having trouble creating new folders or Mailboxes as they are called on the Mac. When I go to create a new Mailbox it asks where to create and the choice is "on my mac". However when I create the new Mailbox it does not show up and there is no "on my mac" in the mailbox list.