I have added the Snap Pixel Code in the head, which includes: 'snaptr('init', 'ID', { 'user_email': 'INSERT_USER_EMAIL' });'
I now have to pass on the email variable but don't know how to do this.
I am using Contact Form 7 in Wordpress.
From your question I understand that you're looking to integrate the Snap Pixel into Wordpress.
You can use something like:
<?php
$email = "test@test.com"; //your mail address
?>
<script>
snaptr('init', 'ID', { 'user_email': <?php echo $email; ?> });
</script>
You can also use a Wordpress Snap Pixel plugin, see for example: https://wordpress.org/plugins/snap-pixel/#installation