iPod touch emailing notes

I often use the built-in Notes feature to email brief messages, usually to myself. I realized today that a couple of messages I had sent recently did not arrive. I sent a few more test messages, and they did not arrive either. I didn't get an error message when I sent them, but they didn't show up in recipient's mailbox. I also discovered that there was a problem with the router in my house, which temporarily inactivated the wireless on my Apple laptop. However, I was still able to connect to the Internet on the iPod touch and assumed that the problem was isolated to the MacBook. That problem has been resolved. However, might there have been a connection? Is there something in the iPod Touch settings that needs to be redone so that I can email notes?