The outlook is free email program and user can easily import emails and account from outlook express into Microsoft outlook. As we know that in outlook each of the mail folder is corresponds to single file. If you want to import the mail then go with the steps which I mention below. If you find any difficulty to do so, then find the perfect solution here by following the post.
1) On file tab just click on open then hit the button of import.
2) After that press the import internet mail and address and click on next button.
3) Now you have to click on outlook express and choose the import mail check box then click on next.
4) And in last just click on finish and if you want to save a copy then click on save inbox.