What happens if I accidentally mark an email as spam/?

I was going through my e-mail (and I get so much it is ridiculous), and I wanted to mark an e-mail as spam. However, after the letter that I thought I marked was deleted, that letter was still there (which means that I accidentally marked another letter as spam - and have no idea which letter that was)

What happens if I accidentally mark an email as spam/?
Check your spam folder. When you mark a message as spam, Mail moves the message into the Spam folder and continues to deliver messages from that address into your Spam folder. Open the email and click Not Spam. Hope this helps!!!
Reply:You have to go to your spam folder and move the one you want back to your inbox. No other way.
Reply:It goes to your spam folder, Just mark as safe in the spam folder.