Tmall elf app. According to the query of Tmall Elf official website, when using Tmall Elf, you need to log in to the Tmall Elf app, and new users can get seven days of free membership when logging in to the Tmall Elf app as a new user's benefit. Therefore, Tmall Elf app can receive Tmall Elf members for free. Tmall Elf is an AI intelligent terminal brand released by Alibaba Cloud Intelligent Business Group of Alibaba Group on July 5, 20 17.