- If you backed up your iPod after you created the Note than restore the iPod from backup. See:
If you use USB backup and suncing make sure that autosyncing is turned off. Otherwise when you connect the iPod to the computer the backup with th Notes will be overwritten. To turn off check the box "Prevent iPods...syncing" in iTunes>Preferences>Devices
- You can also likely set up Notes to be automatically email by turning on that option in Settings>Mail...>in specific mail accounts.