function genesis_update_email() {

  // Pull email options from DB.
  $email_on = genesis_get_option( 'update_email' );
  $email    = genesis_get_option( 'update_email_address' );

  // If we're not supposed to send an email, or email is blank / invalid, stop.
  if ( ! $email_on || ! is_email( $email ) ) {
    return;
  }

  // Check for updates.
  $update_check = genesis_update_check();

  // If no new version is available, stop.
  if ( ! $update_check ) {
    return;
  }

  // If we've already sent an email for this version, stop.
  if ( get_option( 'genesis-update-email' ) === $update_check['new_version'] ) {
    return;
  }

  // Let's send an email.
  /* translators: 1: Genesis version, 2: URL for current website. */
  $subject = sprintf( __( 'Genesis %1$s is available for %2$s', 'genesis' ), esc_html( $update_check['new_version'] ), home_url() );

  /* translators: %s: Genesis version. */
  $message  = sprintf( __( 'Genesis %s is now available. We have provided 1-click updates for this theme, so please log into your dashboard and update at your earliest convenience.', 'genesis' ), esc_html( $update_check['new_version'] ) );
  $message .= "\n\n" . wp_login_url();

  // Update the option so we don't send emails on every pageload.
  update_option( 'genesis-update-email', $update_check['new_version'], true );

  // Send that puppy!
  wp_mail( sanitize_email( $email ), $subject, $message );

}