I am trying to set up a campaign in EXM to send an email based on a Sitecore page. However, when I get to the message part I am unable to set the subject line.
I have added the "Set Page Title" rendering up on the presentation of the item.
and I have this code in my view.
<head>
<meta name="viewport" content="width=device-width" />
@Html.Sitecore().Placeholder("mn-title")
</head>`
But I am still unable to set the subject line. What am I missing?