In early February I got a new laptop and installed Thunderbird on it. However, the "Mark as junk" feature won't work on the new laptop. I place the mouse pointer on an email in the Inbox, right click, then move over and down to Mark, then move over and down to As Junk, and all that happens is the font on the email heading goes from BOLD to regular. The email doesn't move to the Junk Folder, nor are any of the future emails from that address automatically sent to the Junk Folder. Marked as Junk emails just sit there in my Inbox until I manually move them. With the huge number of spam reaching my Inbox these days, this involves a great deal of time and effort, as can be imagined. I'm still using my old laptop to receive my emails (because of another problem I'm having with the installation of Thunderbird on the new laptop), and the "Mark as junk" works fine on it. You place the mouse pointer on the email header, right click, move over and down to "Mark," then over and down to "As Junk," and the email is sent to the Junk Folder, and future emails from that email address goes automatically into the Junk Folder. I'm using the same email service for both the old laptop and the new one, so, I don't fully understand what the differences might be. between the two Thunderbird installations. Perhaps when I set up the email parameters with my email service in the new laptop I inadvertently set up some different parameter than what's I did in the old laptop? Idk.... Anyway, this using the new laptop for internet usage, but then needing to use the old laptop for emails is getting really bothersome - to the point I'm investigating how to go about changing to Outlook for my emails instead of Thunderbird. I'm so anti-Microsoft this is a big a sign of how desperate I'm getting. Any help will be greatly appreciated. (edited for typos)