I see there's a previous issue (https://sogo.nu/bugs/view.php?id=1123) marked as resolved to show a spam report button, but I can't see it on 4.0.0. Has it been moved? Is it gone?
You have to select emails you want to report as spam, then you get a thumbs-down button.
You select an email by clicking on the avatar icon in front of it in the email list.
