deleting email that keeps crashing my Mac mail program

On my Macbook Pro OS X 10.9.5 running Mail Version 7.3 (1878.6) I have an email that keeps crashing my Mac Mail program. I tried avoiding this email but every once in a while after deleting other e-mails this one in particular would be highlighted and would crash my mail program. There are a number of emails from the same address that cause the same issue. I sorted the emails by "from" trying to delete all the e-mails that cause the problem and as long as the e-mails that gave me trouble were highlighted I still have the same problem. Even when I highlight these e-mails along with others my Mail program crashes.

I went to the forums to find a solution as there was no way I could delete these e-mails. One of the ideas was to delete the com.apple.mail folder in the library folder. This I did. When I reopened the Mail application all of my mailboxes were missing. So after fixing that error I am back to trying to get rid of just the emails that crash Mail.

Help would be very much appreciated.I went to the trash and retrieved the .com folder and put it back where it once was. However, the mailboxes did not reappear.