Someone please explain what the envelopes on the left
 

mean (the left most column of the directory page for each forum). I have searched FAQs and can't find it. I have tried to figure it out. I am baffled. Enquiring minds want to know. :confused:

There is a key to what each of the icons means at the bottom of each of the thread listing pages. For example if you go to the Tech issues forum where topics are listed:

http://www.flyertalk.com/forums/forumdisplay.php?f=386

And then scroll down to the bottom of the page you will see a key there.

Thank you. I guess I never scroll past the last thread.