Go to tools /junk email options /blocked senders and remove it,
Click the Junk e‑mail folder.
Click the message that you want to move to your Inbox.
Click the Message menu, point to Junk e‑mail, and then click Mark as Not Junk. The message is moved to your Inbox.
Note Though marking a message as not junk will move that message to your Inbox, future messages from that sender might still end up in the Junk e‑mail folder. To prevent this from happening, add the sender to the Safe Senders list.