DingTalk, an Alibaba product. DingTalk is a multi-sided platform empowers small and medium-sized business to communicate effectively.- Create private and group chat: Free your chatting through forgetting none of your read/unread messages and supporting files transferring.- Free calls: Start free individual or conference call with major world carriers. - Just Ding it: Ding your important messages in audio/text format to alert recipients via phone call, SMS or In-App notification.- Global Address Book: Find all the information about the people you need to work with anytime and anywhere.- Secured Group Chat: Secure your business communication with allowing only people who work in the same company with you should enter.- Bathing mode: Encrypted chat and automatic deletion on chat message after 30 seconds when it is read. Come and chat privately and securely.- DingTalk Apps: Solution to basic office activities, such as notice, personal leave, expenses deduction, business travel and so on to make working life easier.- Business cloud: A home on cloud for scenes from individual to organization. Get concerned and send it to chat whenever you want, wherever you like.- DingTalk mail: A perfect match with chatting, read and unread function is realized, use DING to repost the mail you want.- File Transfer Assistant: Transfer files between your phone and PC.