From 3e9d8bf3f5802347b75e1ef8c31889c04cede732 Mon Sep 17 00:00:00 2001
From: Rotimi Best <best@classroomio.com>
Date: Mon, 15 Jun 2026 08:31:16 +0100
Subject: [PATCH] ui: email preview

---
 .../custom/email-preview/email-preview.svelte | 35 +++++++++++++++++++
 packages/ui/src/custom/email-preview/index.ts |  1 +
 2 files changed, 36 insertions(+)
 create mode 100644 packages/ui/src/custom/email-preview/email-preview.svelte
 create mode 100644 packages/ui/src/custom/email-preview/index.ts

diff --git a/packages/ui/src/custom/email-preview/email-preview.svelte b/packages/ui/src/custom/email-preview/email-preview.svelte
new file mode 100644
index 00000000..88167dfc
--- /dev/null
+++ b/packages/ui/src/custom/email-preview/email-preview.svelte
@@ -0,0 +1,35 @@
+<script lang="ts">
+  import { cn } from '../../tools';
+
+  interface Props {
+    html: string;
+    class?: string;
+  }
+
+  let { html, class: className }: Props = $props();
+
+  let iframeElement = $state<HTMLIFrameElement | null>(null);
+
+  $effect(() => {
+    const doc = iframeElement?.contentDocument;
+    if (!doc) return;
+    doc.open();
+    doc.write(html);
+    doc.close();
+  });
+</script>
+
+<div
+  class={cn(
+    'ui:relative ui:flex ui:h-full ui:w-full ui:items-start ui:justify-center ui:overflow-auto ui:bg-zinc-100 ui:p-4',
+    className
+  )}
+>
+  <iframe
+    bind:this={iframeElement}
+    title="Email preview"
+    sandbox="allow-same-origin"
+    class="ui:h-auto ui:w-full ui:max-w-[600px] ui:rounded-sm ui:border-0 ui:shadow-[0_4px_16px_rgba(0,0,0,0.10)]"
+    style="min-height: 600px"
+  ></iframe>
+</div>
diff --git a/packages/ui/src/custom/email-preview/index.ts b/packages/ui/src/custom/email-preview/index.ts
new file mode 100644
index 00000000..ee7be8f7
--- /dev/null
+++ b/packages/ui/src/custom/email-preview/index.ts
@@ -0,0 +1 @@
+export { default as Preview } from './email-preview.svelte';