Sure, open up profile.php and look up
if ($user['email_setting'] == '0')
$email_field = '<a href="mailto:'.$user['email'].'">'.$user['email'].'</a>';
else if ($user['email_setting'] == '1' && !$cookie['is_guest'])
$email_field = '<a href="misc.php?email='.$id.'">'.$lang_common['Send e-mail'].'</a>';
else
$email_field = $lang_profile['Private'];
and replace it with
if ($user['email_setting'] == '0' || ($user['email_setting'] == '1' && !$cookie['is_guest']))
$email_field = '<a href="misc.php?email='.$id.'">'.$lang_common['Send e-mail'].'</a>';
else
$email_field = $lang_profile['Private'];
Then open up viewtopic.php and look up
if ($cur_post['email_setting'] == '0' || $cur_user['status'] > PUN_USER)
$links[] = '<a href="mailto:'.$cur_post['email'].'">'.$lang_common['E-mail'].'</a>';
else if ($cur_post['email_setting'] == '1' && !$cookie['is_guest'])
$links[] = '<a href="misc.php?email='.$cur_post['poster_id'].'">'.$lang_common['E-mail'].'</a>';
and replace it with
$links[] = '<a href="misc.php?email='.$cur_post['poster_id'].'">'.$lang_common['E-mail'].'</a>';
That should do the trick.
"Programming is like sex: one mistake and you have to support it for the rest of your life."