# Responsive Design — PostFrame — EternalEngine

Templates render correctly on desktop, mobile, and tablet. Preview across device sizes and trust that your emails look great everywhere.

[Back to Templates](https://eternalengineos.io/features/postframe/templates/)

Template Engine

# Responsive Design

Gallery templates are single-column, table-based layouts with a mobile viewport tag, and React Email templates render to inline-styled HTML — the two approaches email clients render most consistently.

[Start free](https://app.eternalengineos.io/signup?plan=free&interval=annual)[Template engine overview](https://eternalengineos.io/features/postframe/templates/)

## Every Screen Size

Single-column tables

Gallery templates use one centered table column that narrows with the screen instead of a fixed grid

Block editor components

Headings, text, buttons, images and dividers are full-width blocks, so a button stays tappable on a phone

Test on real clients

Send a test to your own Gmail, Outlook or Apple Mail account from the editor before you ship

React Email option

Templates written as React Email JSX render to inline-styled HTML plus a plain-text alternative

Send a test to

Gmail

Web, Android, and iOS

Apple Mail

macOS and iOS Mail

Outlook

Desktop and Web

Yahoo Mail

Yahoo Mail and AOL

## Keep exploring PostFrame

[### Live preview Rendered preview as you type. Open Live preview →](https://eternalengineos.io/features/postframe/templates/live-preview/)[### Test sends The real pipeline, to your own inbox. Open Test sends →](https://eternalengineos.io/features/postframe/templates/test-sends/)[### Template library Eight starting points built as single-column tables. Open Template library →](https://eternalengineos.io/features/postframe/templates/template-library/)

Questions

## Common questions, straight answers.

Do the gallery templates work on phones?

Yes. They are single-column table layouts with a width=device-width viewport tag, so they narrow to the screen rather than forcing a horizontal scroll.

Does PostFrame screenshot my email in different clients?

No. PostFrame gives you a live preview and a one-click test send; rendering across Gmail, Outlook and Apple Mail is checked by sending the test to those inboxes.

Are styles inlined for email clients?

React Email templates render to inline-styled HTML with a plain-text alternative. For hand-written HTML templates, inline the styles you need in the HTML editor.

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