The phrase became the signature notification sound for AOL Mail during the 1990s, when home email was still new and hearing it meant someone had written to you. As dial-up faded, the sound survived online as a nostalgic meme and editing staple, reused in YouTube videos, TikToks and reaction clips to flag any incoming message. Its short length and instantly recognisable tone keep it useful for creators who want a quick, retro way to say something has just arrived.