Default [Q] Constant e-mail error message

I'm running CM7, and any time I have either Wi-Fi or Mobile Data on, I get an error message when I wake the phone. A small text box appears on on lower portion of the screen and says 'email', and is then followed by a message that 'Email not sent error. Trying again'. I cannot determine which process is executing this action. The OS is stable, the battery life has not changed, and other than being in the way of what I am doing when waking the phone, it doesn't appear to have otherwise affected my device. Any clues as to what it could be or how I could fix it?