You can manage which emails go to your Junk E-Mail folder from Outlook.
In the Junk Email folder right click on the email in question and from the drop-down menu choose Junk.
Then Choose either:
1) Never Block Sender
This will permit this sender to bypass the filter from now on.
2) Never Block Sender's Domain
This will permit any sender from that same company to bypass the filter from now on.
3) Never Block this Group or Mailing List
Choose this option if the email is from a mailing list or group email.
4) Not Junk
This option will help train the filter to treat similar emails as legitimate.