TeamUp is a team communication service provided by Mattermost hosted by CIT which allows all team communication to be in one place, easy-to-use, searchable and accessible anywhere. With this you can share messages and files across phones and PCs, with archiving and instant search. Click this link to get started
How can I access TeamUp?
TeamUp is available on all platforms and on the web.
Click this link to get started on the web and create teams. Login using your NUSnet ID and password.
Official iOS app by Mattermost (server link to join: https://teamup.nus.edu.sg)