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Design Studio Overview

Design Studio is the editor used to create branded, responsive emails (and in-app messages) inside Customer.io.

Design Studio gives you a flexible way to design professional messages while maintaining brand consistency across your workspace.

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What You Can Do in Design Studio

With Design Studio, you can:

  • Build emails using a drag-and-drop visual editor

  • Switch to a code editor to edit HTML/CSS directly

  • Create and reuse content blocks

  • Apply global brand styles

  • Preview messages across devices and accessibility modes

  • Send test messages and collaborate with teammates

Access depends on your workspace role:

  • Admins & Authors: full editing access

  • Viewers: read-only access

 

Visual Editor vs Code Editor

Every email includes two editing modes:

Visual Editor
  • Drag-and-drop components

  • Style content from the sidebar

  • Insert personalization (Liquid)

  • Best option for building emails from scratch

Code Editor
  • Edit HTML/CSS directly

  • Useful for importing existing templates

  • Includes developer tools for validation and accessibility checks

If you’re unsure which to use, start with the visual editor.

 

Reusable Components

To keep emails consistent and scalable, you can use:

  • Standard components (headings, text blocks, buttons, columns, etc.)

  • Custom components (your own reusable blocks)

Reusable components help maintain brand alignment and speed up production.

 

Global Styles

You can define workspace-wide styles for:

  • Fonts

  • Colors

  • Buttons

  • Spacing

  • Border radii

Once set, emails automatically inherit these styles — keeping branding consistent without manual formatting in every message.

 

Localization

Design Studio supports multi-language emails.

To localize:

  1. Store language preference as a person attribute.

  2. Add translated versions inside the email.

  3. Select which language attribute to use.

You can also use AI-powered translation to generate language variants.

 

Preview & Testing Tools

Before sending, you can preview:

  • Desktop vs mobile

  • Light vs dark mode

  • Images blocked

  • Accessibility views (e.g., color blindness)

  • Personalized data rendering

You can also:

  • Send test emails

  • Share drafts with teammates

  • Manage versions

Note: Only one person can actively edit a Design Studio message at a time.

 

Connecting to Campaigns

A Design Studio email must be connected to:

  • A campaign

  • A broadcast

  • A transactional message

After making edits, you must publish changes for updates to take effect.