Never mind. I was able to do it with
[RANDOM_CONTENT: Subject 1|Subject2|Subject3]
Can I do that with html code? Something like:
[RANDOM_CONTENT:
<html>
<body>
<h1>Campaign 1</h1>
</body>
</html>
|
<html>
<body>
<h1>Campaign 2</h1>
</body>
</html>
|
<html>
<body>
<h1>Campaign 3</h1>
</body>
</html>
]