View Standard Fix
USE CASE Target

Outlook Email Broken Layout Fix: Resolve Max-Width Constraint Collapsing for Editorial & Content Newsletters

Editorial newsletters rely on content layout readability and structural text spacing. If fonts default to Times New Roman or layout borders break, subscriber engagement metrics suffer. Below is the targeted integration guide to fix Max-Width Constraint Collapsing inside Outlook 2016 templates when using Campaign Monitor.

Technical Breakdown

Outlook 2016 uses the Microsoft Word (MSO) which lacks support for standard rendering rules. This causes Max-Width Constraint Collapsing elements to break or collapse when rendering templates.

Campaign Monitor Behaviors

Campaign Monitor wraps custom blocks in dynamic edit tags, which can break the column flow inside Outlook. Ensuring correct class names is essential. Keep your editorial body clean. Strip redundant CSS class definitions using Vaporize to ensure the newsletter stays under Gmail's 102KB clipping ceiling.

Remediation Code Block

To secure design widths, always wrap your layout inside a parent table with a static, hardcoded HTML width attribute (e.g. width='600') targeting Microsoft clients using conditional comments. In your Campaign Monitor campaign manager, make sure you configure your links to run via [unsubscribe].

<!--[if mso]>
<table role="presentation" align="center" border="0" cellpadding="0" cellspacing="0" width="600">
  <tr>
    <td>
<![endif]-->
<div style="max-width: 600px; margin: 0 auto;">
  Centered Layout Content
</div>
<!--[if mso]>
    </td>
  </tr>
</table>
<![endif]-->

Live Code Sandbox Test

Interactive Campaign Monitor Custom Sandbox

Target Environment: Outlook 2016

How to Deploy inside Campaign Monitor

1

Copy the fixed VML or table wrapper code block from the remediation box above.

2

In Campaign Monitor, click the 'Source' button on your selected editable text region, or edit the template code files directly. Ensure you append the 'class="cs-editable"' flag if you need inline editing later.

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