How could I change the way teamstuff sends me emails or notifications?
OK, if you'd like to customise how/when/what notifications come to you; then you need to take a look at the notification settings. These can be found as one of the options on the web, under account settings. It looks a little like the following;

If you want to change the way we send you notifications, then simply click on the pencil icon on the right. For example, if I wanted to change the upcoming game reminder then it would look like the following;

As you can see - there's plenty of power there to change both the way in which you receive the information, as well as when you receive it.