Responsive Email Editor Overview

The responsive email editor lets you create emails without HTML knowledge. You build layouts by dragging and dropping blocks. The editor helps you focus on segmentation, analytics, and personalization.

Creating a Message

  1. Go to Messages → Messages → Email.
  2. Click New Email.
Messages navigation menu open with the Messages submenu item and New Email button highlighted
  1. Open the Gallery tab.
  2. In the left panel, select the template that best fits your campaign from the available categories.
Create new Email page with the Gallery tab and template category panel highlighted

The selected template opens in the editor and is ready for editing.

Editor Interface

The editor consists of the following panels:

  1. Email Management — manage the email lifecycle: save, undo actions, preview, test, etc.
  2. Structure and Modules — build the layout using predefined structures and modules.
  3. Content Blocks — add content such as text, images, buttons, etc.
  4. Message Settings — set core parameters, including subject, hidden preheader, and sender name.
  5. General Styles — configure global styles for stripes, headers, buttons, and other elements.
  6. Comments — collaborate with team members directly in the template.
Email editor interface with six numbered panels: top toolbar, structure and modules, content blocks, and the message settings, general styles, and comments panels on the right

You can drag and rearrange panels to customize the editor layout.

Email editor layout with structure, content block, and settings panels that can be dragged to rearrange their position

Email Management Panel

The panel contains the following buttons:

Email editor toolbar with the back arrow, undo/redo controls, version history icon, and user avatar numbered one through four
  1. Return to the message list — exit the editor.
  2. Undo / Redo — revert or restore recent changes.
  3. Version history — view all saved versions of the email.
  4. User identifier — shows who is currently editing the email. If multiple users are working at the same time, all active users are displayed.

More about Collaborative Email Creation >

Email editor toolbar with the desktop/mobile toggle, language, additional settings, and code editor icons numbered five through nine
  1. Desktop / Mobile mode — switch between modes to verify layout and make device-specific adjustments.
Email editor showing the Fall Collection email while switching between desktop and mobile preview modes
  • Email size indicator. Next to the version controls, the current email size (KB) is displayed.

Keep the email size within 80–100 KB. Some email clients, including Gmail, may clip content if the HTML exceeds this limit. Learn more >

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Note

Dynamic content can increase the final email size.

Gmail clips a message when the final HTML exceeds roughly 102 KB. The size shown in the editor preview is only indicative: after export or sending, the size changes because of merge tags, the subject and preheader, plain-text and AMP parts, unsubscribe and view-in-browser links, tracking links, and platform post-processing.

The tracking pixel is added by the platform when the send is assembled, not as a visible editor block. The pixel itself is negligible and is not a typical cause of clipping — but the whole assembled HTML counts toward the limit.

To check the real size, look at the delivered .eml file or use Gmail's Show original. To reduce it, simplify structures and styles.

Email size indicator showing 83 KB with a tooltip explaining Gmail's 80-100 KB display limit
  1. Theme Emulation. Preview how your message will look in Light or Dark mode directly in the editor, and check whether the design and text render correctly in email clients that support dark mode.
Email editor showing the Fall Collection email while switching between light and dark theme emulation
  1. Multilingual version (optional) — use the Globe icon to create language versions of the email.

Learn more about creating multilingual messages >

  1. Additional settings.

Open the three-dot menu to access advanced options:

  • Link settings — enable click tracking and configure UTM tags.
  • Preprocessor selection — select the method for building dynamic content from prepared data.
  • Plain-text version — fallback version for clients that do not support HTML. An email message has three formats: plain text, HTML, and AMP. The plain-text version is generated automatically from the HTML version, with an option to regenerate it. Mailbox providers require its presence, so seeing it in the message source is standard behavior, not injected foreign code.
  • Custom fontsadd or connect custom fonts.
  • Dynamic content configuration — configure personalized content based on segmentation or behavior.
  • Copy AMP HTML to clipboard — copy the AMP version for testing or debugging.
Additional settings dropdown open with options for link settings, preprocessor selection, plain text, fonts, dynamic content, and copying AMP HTML
  1. Code editor — switch to manual HTML editing for direct code changes.
Code editor icon highlighted in the toolbar with the HTML code editor panel open below the email preview
  1. Email preview — view the email as recipients will see it, without editor elements.
Email editor toolbar with the Preview, Test, Save and exit, and launch icons numbered ten through thirteen
  1. Test — send the email to one or more addresses to verify rendering in a real inbox.

You can enter multiple email addresses separated by commas. To edit an address, click it and select Edit.

Send test message dialog with the Send to email tab open and an example email address entered in the recipient field
  1. Save and exit — saves the current changes in the email and exits to the email list.

The dropdown menu includes the following options:

  • Save — saves the current changes in the email without exiting the editor.

  • Save as template — saves the email as a template.

Save and exit dropdown menu open showing the Save and Save as template options
  1. Create campaign — continue to campaign setup and launch.

Support Chat

The email editor includes a built-in Intercom chat. If you have any questions while working on your email, you can contact the support team without leaving the editor or losing your workflow context.

Email editor with the support chat icon highlighted in the bottom-right corner


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