Thunderbird Email: For some reason I no longer get all new messages as "single" messages. Some of my new messages come in a "thread" (I guess that's what it is). When this happens I don't get any alert or notification. I don't know I have a new email unless I check every so often, and even then it doesn't show up as a new/unread email. I don't want to have to open 'threads' or whatever they are. I want each email to come in as a separate email every time just like it used to do. HOW DO I FIX THIS?????????? Please respond to xxxxxxx@xxxxxxxxx.xxx <i>(email address removed by moderator; please do not post personal information on a public website; [https://support.mozilla.org/en-US/kb/mozilla-support-rules-guidelines Forum rules and guidelines])</i>