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Outlook Email Broken Layout Fix: Resolve Gmail Line-Height Shifts

A programmatic integration guide for resolving email rendering crashes inside Outlook App (iOS & Android) using Brevo (Sendinblue)'s layout editor environment.

Root Bug Analysis

Outlook App (iOS & Android) uses the WebKit / Blink Wrapper which lacks support for standard rendering rules. This causes Gmail Line-Height Shifts elements to break or collapse when rendering templates.

Active rendering engine: WebKit / Blink Wrapper

Brevo (Sendinblue) Specific Guide

Brevo (Sendinblue)'s delivery wrapper can clean and restructure elements during import, creating dynamic spacing differences inside Outlook App (iOS & Android).

Integration Step:

Open Brevo's template canvas, select the element you wish to configure, click 'Edit HTML' or insert a standalone 'HTML' content block, and paste the code.

ESP Unsubscribe Alignment

When compiling custom HTML templates for Brevo (Sendinblue), you must ensure your layout retains deliverability compliance loops. Brevo (Sendinblue) requires you to insert their specific unsubscribe merge tag, otherwise your campaign delivery will be flagged by automated spam audits.

Brevo (Sendinblue) Unsubscribe Tag:{{ unsubscribe }}

Documented Client Behavior

Expected layout behavior based on target rendering engine specifications:

Documented behavior: Gmail Line-Height Shifts causes elements to stack vertically or clip in Outlook App (iOS & Android) when templates are sent from Brevo (Sendinblue).

Interactive Brevo (Sendinblue) Custom Sandbox

Target Environment: Outlook App (iOS & Android)

Auto-compile fixes inside RenderOps Workspace

Load layout code directly into our CSS Inliner to compile responsive table frameworks that display cleanly in Outlook App (iOS & Android).

Launch CSS Inliner

Fix Gmail Line-Height Shifts on Other clients for Brevo (Sendinblue)