Adding icons or pictographs in front of tasks
I've noticed in some of your resources and blog post (http://todoist.com/blog/2013/01/zero-inbox-policy-with-todoist/) that there is a small envelope icon that displays in front of certain tasks. Is this something that is automatically inserted when a task is added from an email? I would like to be able to add icons to other tasks as well, such as a phone icon for tasks where I need to make a phone call or a house for items that I need to do at home. This way I could quickly look at my tasks and quickly identify the type of action needed for the task. Is it possible to add icons in front of tasks or project names currently? If not, is this a feature you would consider adding in the future?
This icon is indeed added automatically if a task is linking to an email. We always try to keep a clean interface in Todoist and we may not add such option in the future, but you're welcome to add a request for it to our Votebox: http://todoist.com/Vote/
For now, you could use labels to see the context of tasks. Type @call within the task name to create a "call" label, then you can change its color to make it more distinguishable (in the @ menu).