To reply to a visitor message in Googlemail, users can either post a response directly on the other user's profile page or comment on their own visitor page, though the latter won't send a notification. The "view conversation" option allows users to see all exchanged messages in chronological order and also sends notifications when replies are made. Some users expressed surprise at the functionality of the "view conversation" feature, realizing it enabled ongoing discussions. Additionally, there was a side conversation about the absence of chat sessions, with users expressing their disappointment and hoping for future chats. Overall, the thread highlights the methods for replying to messages and the community's engagement with the platform's features.