For sms... From Monty Python... a sound of the arrow flying and hitting the tree... then the heavy British accent saying "message for you sir". If you remember from the movie (holy grail)... the arrow comes in with a message on it.
For email... I have Homer Simpson saying "Doh". Always gets a chuckle when people hear it.
Squad 51 tones most of the time, especially at work because it's very obnoxious. Sonar ping rest of the time.
you happen to have this saved somewhere? I can't find it anywhere!Mario Brothers coin sound. No one ever complains about Mario sounds so it's never offensive.