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@mailpeek/preview

v0.1.5

Published

Vue.js email preview component — see how emails render in Gmail and Outlook

Vulnerabilities

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Links

Git

Maintainers

aoifeshannonaoifeshannon

Keywords

vuevue3emailemail-previewemail-testinghtml-emailgmailoutlookresponsivecomponentpreviewmailrender

Readme

@mailpeek/preview

Vue 3 component for previewing email HTML across Gmail, Outlook, and dark mode — with compatibility scoring and accessibility checking built in.

mailpeek demo

Live Demo · Docs · GitHub

Features

  • Gmail & Outlook preview — Per-client CSS filtering strips unsupported properties (@font-face, @media, positioning, flexbox, grid, and more)
  • Dark mode — Preview how each client transforms your email in dark mode
  • Compatibility scoring — 0-100 score with per-property breakdown of what breaks in each client
  • Accessibility checker — 10 WCAG checks for alt text, heading hierarchy, link text, and colour contrast
  • Device toggle — Switch between mobile and desktop viewports
  • Metadata display — Subject line, preview text, and file size with Gmail 102KB clipping warning
  • Zero dependencies — Vue 3 peer dep only, fully typed, SSR compatible with Nuxt 3

Installation

npm install @mailpeek/preview

Quick Start

<script setup lang="ts">
import { EmailPreview } from '@mailpeek/preview'
import '@mailpeek/preview/style.css'

const emailHtml = `
  <html>
    <head><title>Welcome to Our Service</title></head>
    <body>
      <h1>Hello!</h1>
      <p>Thanks for signing up.</p>
    </body>
  </html>
`
</script>

<template>
  <EmailPreview :html="emailHtml" />
</template>

Props

| Prop | Type | Default | Description | |------|------|---------|-------------| | html | string | undefined | Raw email HTML to preview | | width | string | '600px' | CSS width for the preview container | | client | 'gmail' \| 'outlook' \| 'raw' | 'gmail' | Email client to preview | | mobile | boolean | false | Enable mobile chrome variant | | deviceWidth | 'mobile' \| 'desktop' | 'desktop' | Device width preset | | darkMode | boolean | false | Enable dark mode preview |

Events

| Event | Payload | Description | |-------|---------|-------------| | loaded | Event | Fired when the iframe finishes loading | | client-change | 'gmail' \| 'outlook' \| 'raw' | Fired when user switches email client | | device-change | 'mobile' \| 'desktop' | Fired when user changes device | | darkmode-change | boolean | Fired when user toggles dark mode |

CSS Filtering

When previewing in Gmail or Outlook mode, mailpeek removes unsupported CSS properties and logs warnings:

[mailpeek] Gmail Web: removed "position: fixed" — Gmail does not support CSS positioning
[mailpeek] Outlook: removed "border-radius: 4px" — Outlook Word renderer does not support border-radius

Gmail strips: position, transform, animation, transition, box-shadow, display: grid, flexbox sub-properties, @font-face, @media queries, and more. Style blocks over 8,192 characters are removed entirely.

Outlook (Word engine, 2016-2021) strips everything Gmail does, plus: border-radius, display: flex, background-size, max-width, min-width, float, and more.

Also Available

@mailpeek/components — 14 Vue components for building cross-client email HTML with server-side rendering.

License

MIT