Blank emails hung up in "sent" folder

Hello,

I have two emails that are sitting in my "sent" folder that I cannot delete in my Apple Mail. They are grayed out. If I hit delete, nothing happens and if I go in to hit delete again, the delete option then becomes "undelete". There is nothing in the email...just the headers. I have tried what little I know to get rid of these things but cannot. Would appreciate any help at all. If you doubleclick the "sent to person", the email opens up totally empty

Thanks

I was able to get rid of both of them. I had set up another email account on Mail, then decided after I sent those two test emails to delete that account. Those two emails were "ghost" sends from the deleted account that I had not deleted from the "send" folder. I had to recreate the deleted email account just to get rid of those "ghost" emails, then delete that account again.