Click on Setup in the toolbar, then click on Preferences, and finally click on Email.
If you have a gmail account type in your email username and passord, then click send test email and wait for an email to be sent to you.
If you don't have a gmail account click on the SMTP option. You will need to find out your SMTP and port number from your email provider. Once you have entered all the information asked for you can send yourself a test email.
Please note if you have multiple usernames and passwords set up each user must log in and setup their own email information.