Hi @JulieL34. You brought up a great point. Just to confirm, are you seeing content from the newsletter appear after the preheader when viewing your inbox? If this is the case, this is not something that we are able to control as the inbox will display whatever content appears after the subject line or preheader but I can certainly understand how you would like to be able to have control over how your subject line and preheader appear before the email is opened. It's also worth mentioning that not all email clients even display the preheader!
Although you can create a longer subject line or preheader in order to prevent the campaign content from showing in the inbox, we caution against it as longer subject lines can look like spam to some contacts. We recommend keeping the subject line between four and seven words and the preheader should be on the shorter side as well since it is merely there to enhance your subject line.
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