View Standard Fix
USE CASE Target

Outlook Email Broken Layout Fix: Resolve Max-Width Constraint Collapsing for eCommerce Campaigns

In eCommerce email marketing, rendering issues directly tank conversion rates and cart recoveries. Product grids, checkout CTAs, and discount banners must display flawlessly to prevent purchase drop-offs. Below is the targeted integration guide to fix Max-Width Constraint Collapsing inside Outlook 2013 templates when using MJML Framework.

Technical Breakdown

Outlook 2013 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.

MJML Framework Behaviors

The MJML transpilation compiler parses dynamic columns and wraps them in custom HTML conditional tags. If you paste direct tables or VML code blocks inside an MJML layout without proper escaping, the MJML compiler will try to clean the code, resulting in stripped Outlook namespaces and broken layouts. Double-check your dynamic product feed blocks. When injecting product loops from your catalog, ensure width sizes are explicitly handled to keep columns from overlapping.

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 MJML Framework campaign manager, make sure you configure your links to run via {{unsubscribe_link}}.

<!--[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 MJML Framework Custom Sandbox

Target Environment: Outlook 2013

How to Deploy inside MJML Framework

1

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

2

Wrap the entire RenderOps corrected table block inside an '<mj-raw>' tag block. This tells the MJML compiler to bypass parsing on this segment, exporting the exact conditional statements into the final HTML output.

Targeted Fixes by Use Case & Industry