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CORE MODULE

Optimise for Mobile Viewports

What you'll learn in this guide

Make sure your emails look as good on a phone as they do on a desktop. We'll walk through the mobile version settings in the visual editor, how to preview your design across devices, and what to tweak so everything lands cleanly on smaller screens.

Overview

Most people read email on their phone, often before they even sit down at a desk. An email that looks great on desktop but feels cramped, oversized, or awkwardly stacked on mobile is missing the mark for the majority of your audience.

The good news is that the visual editor makes mobile optimisation straightforward. Throughout the editor, most settings have a mobile version — a separate value that only applies when your email is viewed on a mobile device. You can fine-tune text size, spacing, alignment, image dimensions, and even hide individual elements on mobile, all without changing how things look on desktop.

It's not about building two emails. It's about making small, targeted adjustments so the same email feels right on both.

Good to know
Mobile version settings are available right across the visual editor— look for the phone icon and device toggles in the right-hand settings panel.. Anywhere you can configure a setting for desktop, there'll usually be a mobile equivalent sitting alongside it. Once you spot the pattern, it shows up everywhere.

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Set a mobile-specific value

Each setting that supports mobile customisation has its own mobile version you can override independently of the desktop value.

  1. Click the Stripe, Structure or Editor Block you want to adjust.
  2. The settings panel on the right-hand side of the editor will open.
  3. Find the setting you want to change — things like font size, padding, alignment, display/hind or image width.
  4. Look for the mobile icon next to the setting field, click the icon and enter the value you want to apply on mobile only.
  5. Click Save template and then Preview to check how the change lands.

Your desktop value stays exactly as it was. The mobile value only takes effect when your email is opened on a smaller screen.

Padding (Mobile override)
Padding
Toggle the phone icon to set mobile-only values without affecting desktop.
More
All
0

What it does

Sets how much breathing room sits around an element. With the phone icon active, your changes only apply on mobile — desktop padding stays exactly as it was.

Use this when

Padding that looks balanced on desktop feels too generous on mobile — usually around sections, images, and buttons.

Visibility
Hide element
Choose where this element appears — everywhere, desktop only, or mobile only.
No
Show Hide on desktop Hide on mobile

What it does

Controls whether an element shows up on desktop, mobile, or both. Pick No to always show it, the desktop icon to hide it on larger screens, or the phone icon to hide it on mobile.

Use this when

You have decorative spacers, sidebar images, or secondary CTAs that work on desktop but crowd things out on mobile. Hide them on mobile to keep the layout clean.

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What's worth tweaking for mobile

You don't need to override every setting, just the ones that make a noticeable difference on a smaller screen. Here's a quick rundown of the usual suspects:

Setting What to think about
Text Body text often needs a small bump in size on mobile for comfortable reading. Headlines that look bold on desktop can sometimes feel oversized on a phone, so don't be afraid to drop them down a notch.
Spacing and padding Tighter padding usually works better on mobile, especially around buttons and section breaks. Too much white space and your reader is scrolling forever to reach the point.
Buttons Full-width buttons are easier to tap and harder to miss. Check the button text still fits cleanly on one line at mobile size.
Images Images that look proportional on desktop can dominate the screen on mobile. Adjust the width or alignment if an image is stealing focus from your copy.
Columns Multi-column rows usually stack vertically on mobile by default. Preview to confirm the stacking order makes sense, and reorder content if a mobile-first reading flow would work better.
Hide on mobile Some content (a decorative spacer, a sidebar image, a secondary CTA) doesn't earn its place on a small screen. Use the hide-on-mobile option to keep things tidy without losing the element on desktop.

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Test on a real device before you send
‍The mobile preview gives you a great approximation, but nothing beats sending a test to your own phone. Different inboxes (Gmail, Outlook, Apple Mail) can render things slightly differently, and a real-world test is the surest way to catch anything the preview doesn't.

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That's it — your email is now tuned for both desktop and mobile. Once you're happy with how it looks in each preview, you're ready to send a test and schedule your send.

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In this GUIDE
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