The iPod Touch may not be used for making regular phone calls or sending text messages unless you have purchased an app which allows you to do so. That, however, does not mean it is not a communication device that you can still use for mass contacts. Mail ends up being a central part of usage. You can take an existing email account and connect it up to your iPod Touch for easy use through the regular Mail app instead of being forced to use the Safari browser.
For email on the iPod Touch, getting started requires going into the Mail app and selecting the provider of your email. When you do it will ask you for your name, email address, password, and any relevant description. When you enter this information. it will attempt to connect to your email account and then will ask if you want to save the account to your mail. You can then select to receive emails as well as if you want to sync the calendar on the iPod to that in your email account.
You have the option to then set Push Notifications to the Mail, which would be pop up notifications to tell you about new emails in your inbox. First, go into Settings and then to Notifications. Make sure that the switch inside is set to On, then go back to the regular settings menu. Go into Mail, Contacts, Calendar and head to Fetch New Data, which will be right under the listing of your attached email accounts. In here you will turn on Push, which will then ask you to set a time period with which to get new data from your email account. It will be set to Manually on its own, but instead you may want to change it to 30 Minutes or Hourly if you want an accurate message system for your email account.