Hi,
You can try opening the file: root/plugins/system/jabuilder/html/jabuilder/mail.php
and add the JTEXT for translation like this:
<?php
$items = $displayData['items'];
?>
<?php echo JText::_('JB_HELLO'); ?>,<br /><br />
<?php echo JText::_('JB_SUBMITTED_DATA'); ?>:<br /><br />
<?php foreach ($items as $item) : ?>
<strong><?php echo $item['title'] ?></strong>
<pre><?php echo $item['value'] ?></pre>
<?php endforeach ?>
<br />
<?php echo JText::_('JB_THANKS'); ?>,
Then you add above text: JB_HELLO, JB_SUBMITTED_DATA, JB_THANKS to the language file of this template in Spanish language folder: root/language/es-ES/es-ES.tpl_ja_builder.ini
If this file doesn’t exist, you can copy this file: root/language/en-GB/en-GB.tpl_ja_builder.ini from English and past to that es-ES folder and do the translation.
Regards