Sanitize e-mail addresses when running `drush sql-sync --sanitize`

Wow, I didn't even know this existed. I had the idea for a while that we should consider ways to sanitize sensitive information, including things like card on file references, payment gateway variables, billing addresses, etc. I didn't know there was a method for doing so. What is the recommended usage for this drush function, and is it already sanitizing the e-mail addresses of user profiles, too?

Whoa, dude - lemme know where your review is happening and I'll do what I can to pitch in on reviews to get you approved. : )

You could try using the https://www.drupal.org/project/scrambler module. This module scrambles/sanitizes data which you have defined. There is no UI module for commerce yet but it is possible to define which fields for which tables to scramble. Here's a code example of how to use the hooks.

/**
 * Implements hook_scrambler_api().
 */
function scrambler_example_scrambler_api() {
  // Define your module name.
  $params['scrambler_example'] = array(
    // Give a unique machine name for your scrambling group.
    'shuffle_words_for_title' => array(
      // Define base table where these fields are located.
      'base_table' => 'scrambler_example',
      // Define the id of the base table.
      'id' => 'sid',
      // Define field names.
      'fields' => array('title'),
      // Define a scramble method from the scrambler API.
      'method' => SCRAMBLER_METHOD_SHUFFLE_WORDS,
    ),
    // Give a unique machine name for your scrambling group.
    'custom_method_for_teaser' => array(
      // Define base table where these fields are located.
      'base_table' => 'scrambler_example',
      // Define the id of the base table.
      'id' => 'sid',
      // Define field names.
      'fields' => array('teaser'),
      // Define your custom scrambling method.
      'method' => 'custom_scrambling',
    ),
  );

  return $params;
}

/**
 * Implements hook_scrambler_methods().
 */
function scrambler_example_scrambler_methods() {
  return array('custom_scrambling' => 'Custom scrambling (scrambler_example module)');
}

/**
 * Custom scrambling method by the scrambler_example module.
 *
 * @param string $data
 *   Input data to scramble.
 *
 * @return string
 *   Returns the scrambled string.
 */
function _scrambler_example_method_custom_scrambling(&$data) {
  // Manipulate the $data parameter in which way you think is necessary.
  return str_replace('e', 'x', str_replace('a', 'y', $data));
}