View Standard Fix
USE CASE Target

Outlook Email Broken Layout Fix: Resolve Max-Width Constraint Collapsing for Transactional & System Notifications

Transactional emails (receipts, password resets, shipping alerts) carry critical operational data. Spacing collapses or broken buttons can block users from completing essential user journeys. Below is the targeted integration guide to fix Max-Width Constraint Collapsing inside Outlook 2013 templates when using HubSpot.

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.

HubSpot Behaviors

HubSpot's COS template manager automatically wraps content blocks in dynamic div structures to support their drag-and-drop system. These extra wrappers force styling inheritances that override inline td paddings, leading to spacing collapses in Outlook. Setting explicit table element attributes is crucial. Because system notifications are triggered frequently, ensure your CSS rules are completely inlined to guarantee readability in high-volume, automated delivery queues.

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 HubSpot 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 HubSpot Custom Sandbox

Target Environment: Outlook 2013

How to Deploy inside HubSpot

1

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

2

In HubSpot's Design Manager, edit the modules section. Create a 'Rich Text' or 'HTML' module block. Double-click the block, choose 'Tools' or 'Advanced', click 'Source Code', and drop the code snippet inside.

Targeted Fixes by Use Case & Industry