Yes, of course - when you add in a task into the system you are given a couple of options with regards to how you can be reminded - Via Email or Via SMS - this means that you don't have to even log into the system in order for you to be reminded of the tasks you have to do. 

You also have the "My Day/My Week" function on the homepage which shows you everything you have to do from tasks to events right on the homepage as you log into the system.