Problem/Symptoms: All incoming emails in Mozilla’s Thunderbird appear as if they have attachments, regardless if they have attachments or not. The attachment icon disappears immediately after opening the email (as long as the email did not legitimately have an attachment).
Solution: AVG automatically attaches an email certification message to all incoming emails stating, “No virus found in this incoming message.” which Thunderbird interprets as an attachment. This problem has a very simple fix:
This will only add the “No virus found…” message to only emails with attachments, solving the false attachment problem.