You can set up web-based email services such as Hotmail, Gmail and Yahoo on your mobile device so you can receive your emails on the go.
You can find out how to set up email, here.
Once set up, you can choose whether to set your email to Push or Pull (also called Fetch) your emails.
Typically, Push means your emails arrive in real time. Pull or Fetch means your emails arrive based at a pre-selected time, such as every 15 minutes.