Task managers keep us at the jobs we need to do and complete.
Gmail which I use as my email client comes with a great task manager.
When you receive an email with a task in it , that you have to complete , just click on the box on the left hand side then go to “more actions” which has a dropdown menu and click on “Add to Tasks” and it will appear on your task list.
You are also able to create multiple task lists by going to the actions and on the right hand side is a List Symbol , click on it and you can make a new list.
Your emails that are associated with tasks can always be accessed by clicking on the email link underneath the task.