Google has slowly moved most of the support groups to a new platform better suited for question answering. Unfortunately, you still needed to find the proper help forum where to post your question.
Now you don't have to visit Gmail's forum to post a question about Gmail. Just go to this page, type your question and choose the appropriate Google product from the drop-down. Google even lists similar questions and their answers when you type your question, which is great because many people forget to search before posting. By default, you'll receive an email notification when someone answers your question.