How to mark email messages as Not Junk?

Question

When I look in the Junk email folder in Mac Mail, I see messages that I did not mark as junk mail.  I guess Mac Mail is somehow filtering and classifying the messages as junk.  Within the Junk folder, however, there are messages that are not junk.  How to I mark these items (and future messages from the same source) as not junk, so that they appear in my Inbox and not in my Junk folder?
What I Think I Am Supposed To Do
1. Open a message in the Junk folder that I do not want to be classifled as junk.
2. By default, a "thumbs down" icon appears in the toolbar (View > Show Toolbar).  I click on thumbs down to mark the message as junk. The thumbs down icon changes to a "thumps up" icon.
3. I click on the thumbs up icon to mark the item as not junk
Is this the right thing to do?  When I do the above steps, the message remains in the Junk folder - it does not move my Inbox folder.  But will future messages from the same source go into my Inbox?
Thanks

Answer 1

In case other are having this problem: With Outlook.com email, I found that mark email items as Not Junk within Mac Mail had not effect.  Subsequent emails from the same sender still went into the Junk folder.
I had to sign on to my Outlook.com email at www.outlook.com website and mark the emails there as Not Junk.  Subsequent emails from the same sender than arrived in my Mac Mail Inbox, as desired.