Email messages from a particular contact are no longer displaying correctly in Thunderbird. The email appears in the inbox, and the subject is visible. When the message is opened, no information is displayed and a blank message is shown. This is only happening for this one contact with an @mac.com email address. I have tried to repair the inbox folder via properties with no change. At this time, the emails are able to be accessed through an alternate email platform to be viewed, however this is not a viable long-term solution. Thank you for your help.