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Constraints

Preheader is unsupported with tokens from Marketo (https://experienceleague.adobe.com/en/docs/marketo/using/product-docs/email-marketing/general/email-editor-2/email-editor-v2-0-overview)
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How Mary updates Preheader

There are two ways to support the Preheader update
  1. Use static preheader
    1. No change required, Mary will read Preheader section on your brief doc and update the Email metadata directly.
  2. Use tokenized preheader
    1. Add preheader content on top of the email template. This is the common practice to place an invisible element on top of an email. So this content won’t be visible in the actual email. However, it is still visible as preview (preheader) text.
<div style="font-size:0px;line-height:1px;mso-line-height-rule:exactly;display:none;max-width:0px;max-height:0px;opacity:0;overflow:hidden;mso-hide:all;">

<!-- Customize based on your needs -->

{{my.Preheader-Title}} - {{my.Preheader-Description}}

</div>
Example: Tokenized preheader HTML code
  1. Add tokens for the preheader, for above example, “Preheader-Title” and “Preheader-Description”
  2. Mary will update the tokens from the brief doc.