I'm using Drupal 7.12 / Webform 3

How do I stop email from being sent upon a webform submission? I want to do this conditionally so I need to use a hook. I still want everything else to go through correctly (i.e. confirmation page, db entry for submission).

I can't seem to find what I'm looking for in the webform hooks.

I'm using Drupal 7.12 / Webform 3

How do I stop email from being sent upon a webform submission? I want to do this conditionally so I need to use a hook. I still want everything else to go through correctly (i.e. confirmation page, db entry for submission).

I see that there are these lines in function webform_client_form_submit($form, &$form_state)

if (!$is_draft && !$form_state['values']['details']['finished']) {
    $submission = webform_get_submission($node->webform['nid'], $sid, TRUE);
    webform_submission_send_mail($node, $submission);
  }

How do I hook into that and stop it?