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USE CASE Target

Outlook Email Broken Layout Fix: Resolve Padding & Margin 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 Padding & Margin Collapsing inside Outlook 2019 templates when using React Email.

Technical Breakdown

Outlook 2019 uses the Microsoft Word (MSO) which lacks support for standard rendering rules. This causes Padding & Margin Collapsing elements to break or collapse when rendering templates.

React Email Behaviors

React Email relies on compiling CSS parameters dynamically. However, React Email's compiler cannot parse raw MSO conditional comments or VML structures in TSX files directly. 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 ensure spacing works reliably, apply all structural paddings directly to HTML td elements inside tables. Do not apply paddings or margins to raw divs, as Outlook will strip them. For vertical spacing, use explicit spacer tables or empty rows. In your React Email campaign manager, make sure you configure your links to run via {unsubscribeUrl}.

<table role="presentation" border="0" cellpadding="0" cellspacing="0" width="100%">
  <tr>
    <td height="20" style="font-size: 1px; line-height: 1px;">&nbsp;</td>
  </tr>
  <tr>
    <td style="padding: 15px; background-color: #f1f1f1;">
      Content with padding and margin
    </td>
  </tr>
  <tr>
    <td height="20" style="font-size: 1px; line-height: 1px;">&nbsp;</td>
  </tr>
</table>

Live Code Sandbox Test

Interactive React Email Custom Sandbox

Target Environment: Outlook 2019

How to Deploy inside React Email

1

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

2

Import the standard '<Html>' or '<Container>' primitives. To insert our VML or custom Outlook table markup directly, wrap the raw HTML snippet inside React's 'dangerouslySetInnerHTML' parameter on a div or span.

Targeted Fixes by Use Case & Industry