How are some of my past saved Thunderbird emails automatically being combined into one email without me knowing about it when I try to look at them again? What is odd is that they are different saved contact company names so I can't figure out why certain past emails of mine are automatically being bunched together making them to take forever re-loading them when I re-open them and then having to scroll down them a long ways due to all of the extra emails they are putting underneath them making the email so long & odd when they are all different companies!