BuddyPress.org

Yes, but this code doesn’t work

function activation_email( $user_id, $user_email, $key, $user_login = '' ) {

  $args = array(
    'tokens' => array(
      'key'          => $key,
      'user.email'   => $user_email,
      'user.id'      => $user_id,
    ),
  );

  if ( $user_id ) {
    $to = $user_id;
  } else {
    $to = array( array( $user_email => $user_login ) );
  }

    $teacher = bp_get_profile_field_data('field=Teacher&user_id='.$user_id);

    bp_send_email( 'core-user-registration', $teacher , $args );

}
add_action('bp_core_signup_send_validation_email','activation_email',99,4);