View file veppa_wallpaper/sys/app/views/login/mail_activate.php
<?php echo __('Thank you for registering with {site}. Please activate your account by clicking on activation link. If link is not working copy and paste link into address bar in your web browser.',array('{site}'=>$site)) ?>
<?php echo __('Activation link')?>:
<?php echo $activation_url?>
<?php echo __('NOTE: All accounts not activated in 48 hours are deleted.')?>
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<?php echo $site; ?>