I am using Thundirbird 3.1.7. I am using Gmail with it.

When I mark a message as spam in Thunderbird, I want it to go to Gmail's spam folder. But it is not happening. The mail is only marked as spam and stays in Gmail's inbox.

How can I setup Thunderbird so that when I mark a message as spam in thundirbird, it goes to spam folder in both Thunderbird and Gmail?

FYI: I have disabled Thunderbird's own adaptive spam controls so that it doesn't interfere. I am perfectly fine with Gmail's spam facility and don't want Thunderbird to add another layer of spam filtering. Still Thunderbird doesn't send emails to Gmail's spam.

Update I figured that dragging and dropping the email to the spam folder in Thunderbird does the job. But is it the same as marking the email as spam in Gmail's interface? i.e. Gmail will do stuff when you mark an email as spam so that it can filter out similar messages in the future. Does it happen when I do this drag and drop thing too? Are they the same?