diff --git a/apps/api/src/services/ActivityService.ts b/apps/api/src/services/ActivityService.ts
index f46e47e..6e3ef61 100644
--- a/apps/api/src/services/ActivityService.ts
+++ b/apps/api/src/services/ActivityService.ts
@@ -454,6 +454,11 @@ export class ActivityService {
     for (const email of emails) {
       const baseMetadata = {
         subject: email.subject,
+        body: email.body,
+        from: email.from,
+        fromName: email.fromName,
+        replyTo: email.replyTo,
+        toName: email.toName,
         sourceType: email.sourceType,
         campaignName: email.campaign?.name,
         workflowName: email.workflowExecution?.workflow?.name,
diff --git a/apps/web/src/components/ActivityItem.tsx b/apps/web/src/components/ActivityItem.tsx
index cf32c14..5f934e0 100644
--- a/apps/web/src/components/ActivityItem.tsx
+++ b/apps/web/src/components/ActivityItem.tsx
@@ -1,6 +1,7 @@
-import {Badge, Collapsible, CollapsibleContent, CollapsibleTrigger} from '@plunk/ui';
+import {Badge, Button, Collapsible, CollapsibleContent, CollapsibleTrigger} from '@plunk/ui';
 import type {Activity} from './ActivityFeed';
-import {memo} from 'react';
+import {memo, useState} from 'react';
+import {EmailPreviewModal} from './EmailPreviewModal';
 import {
   AlertCircle,
   Calendar,
@@ -90,6 +91,13 @@ function getUpcomingTime(date: Date): string {
   return `in ${diffInMonths} ${diffInMonths === 1 ? 'month' : 'months'}`;
 }
 
+/**
+ * Check if an activity is an email activity
+ */
+function isEmailActivity(type: string): boolean {
+  return ['email.sent', 'email.delivered', 'email.opened', 'email.clicked', 'email.bounced'].includes(type);
+}
+
 interface ActivityItemProps {
   activity: Activity;
   isUpcoming?: boolean;
@@ -295,6 +303,7 @@ function getActivityConfig(activity: Activity): ActivityConfig {
 }
 
 export const ActivityItem = memo(function ActivityItem({activity, isUpcoming = false}: ActivityItemProps) {
+  const [showPreviewModal, setShowPreviewModal] = useState(false);
   const config = getActivityConfig(activity);
   const Icon = config.icon;
   const timestamp = new Date(activity.timestamp);
@@ -318,6 +327,17 @@ export const ActivityItem = memo(function ActivityItem({activity, isUpcoming = f
                 {config.title}
               </p>
               {config.badge && <Badge variant={config.badge.variant}>{config.badge.label}</Badge>}
+              {isEmailActivity(activity.type) && activity.metadata.subject && activity.metadata.body ? (
+                <Button
+                  variant="ghost"
+                  size="sm"
+                  onClick={() => setShowPreviewModal(true)}
+                  className="h-6 px-2 text-xs"
+                >
+                  <Eye className="h-3 w-3 mr-1" />
+                  Preview
+                </Button>
+              ) : null}
             </div>
             {config.description && <p className="text-sm text-neutral-500 line-clamp-2">{config.description}</p>}
             {activity.contactEmail && (
@@ -357,6 +377,21 @@ export const ActivityItem = memo(function ActivityItem({activity, isUpcoming = f
           </span>
         </div>
       </div>
+
+      {/* Email Preview Modal */}
+      {showPreviewModal && activity.metadata.subject && activity.metadata.body ? (
+        <EmailPreviewModal
+          open={showPreviewModal}
+          onOpenChange={setShowPreviewModal}
+          subject={String(activity.metadata.subject)}
+          body={String(activity.metadata.body)}
+          from={activity.metadata.from ? String(activity.metadata.from) : undefined}
+          fromName={activity.metadata.fromName ? String(activity.metadata.fromName) : undefined}
+          replyTo={activity.metadata.replyTo ? String(activity.metadata.replyTo) : undefined}
+          toName={activity.metadata.toName ? String(activity.metadata.toName) : undefined}
+          toEmail={activity.contactEmail}
+        />
+      ) : null}
     </div>
   );
 });
diff --git a/apps/web/src/components/EmailPreviewModal.tsx b/apps/web/src/components/EmailPreviewModal.tsx
new file mode 100644
index 0000000..52df741
--- /dev/null
+++ b/apps/web/src/components/EmailPreviewModal.tsx
@@ -0,0 +1,173 @@
+import {Button, Dialog, DialogContent, DialogHeader, DialogTitle} from '@plunk/ui';
+import {Monitor, Smartphone, Tablet} from 'lucide-react';
+import {useState} from 'react';
+
+interface EmailPreviewModalProps {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  subject: string;
+  body: string;
+  from?: string;
+  fromName?: string;
+  replyTo?: string;
+  toName?: string;
+  toEmail?: string;
+}
+
+type PreviewDevice = 'mobile' | 'tablet' | 'desktop';
+
+export function EmailPreviewModal({
+  open,
+  onOpenChange,
+  subject,
+  body,
+  from,
+  fromName,
+  replyTo,
+  toName,
+  toEmail,
+}: EmailPreviewModalProps) {
+  const [previewDevice, setPreviewDevice] = useState<PreviewDevice>('desktop');
+
+  const getPreviewContainerWidth = () => {
+    switch (previewDevice) {
+      case 'mobile':
+        return '375px';
+      case 'tablet':
+        return '768px';
+      case 'desktop':
+        return '100%';
+    }
+  };
+
+  const getDeviceLabel = () => {
+    switch (previewDevice) {
+      case 'mobile':
+        return '375px';
+      case 'tablet':
+        return '768px';
+      case 'desktop':
+        return '1200px';
+    }
+  };
+
+  const displayFrom = fromName ? `${fromName} <${from}>` : from;
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="max-w-6xl h-[90vh] flex flex-col p-0">
+        <DialogHeader className="px-6 pt-6 pb-4 flex-shrink-0">
+          <DialogTitle className="pr-8">Email Preview</DialogTitle>
+        </DialogHeader>
+
+        {/* Device Selector */}
+        <div className="border-t border-b border-neutral-200 bg-neutral-100 px-6 py-3 flex-shrink-0">
+          <div className="flex items-center justify-between">
+            <div className="flex items-center gap-2">
+              <p className="text-xs font-medium text-neutral-600">Preview</p>
+              <span className="text-xs text-neutral-500">({getDeviceLabel()})</span>
+            </div>
+            <div className="flex gap-1">
+              <Button
+                type="button"
+                variant={previewDevice === 'mobile' ? 'default' : 'ghost'}
+                size="sm"
+                onClick={() => setPreviewDevice('mobile')}
+                className="h-7 w-7 p-0"
+                title="Mobile (375px)"
+              >
+                <Smartphone className="h-3.5 w-3.5" />
+              </Button>
+              <Button
+                type="button"
+                variant={previewDevice === 'tablet' ? 'default' : 'ghost'}
+                size="sm"
+                onClick={() => setPreviewDevice('tablet')}
+                className="h-7 w-7 p-0"
+                title="Tablet (768px)"
+              >
+                <Tablet className="h-3.5 w-3.5" />
+              </Button>
+              <Button
+                type="button"
+                variant={previewDevice === 'desktop' ? 'default' : 'ghost'}
+                size="sm"
+                onClick={() => setPreviewDevice('desktop')}
+                className="h-7 w-7 p-0"
+                title="Desktop (1200px)"
+              >
+                <Monitor className="h-3.5 w-3.5" />
+              </Button>
+            </div>
+          </div>
+        </div>
+
+        {/* Preview Area - Single scroll container */}
+        <div className="flex-1 overflow-y-auto bg-neutral-50">
+          <div className="p-6 flex justify-center items-start min-h-full">
+            <div
+              className="transition-all duration-300"
+              style={{
+                width: getPreviewContainerWidth(),
+                maxWidth: '100%',
+              }}
+            >
+              <div className="bg-white rounded-lg border border-neutral-300 shadow-lg overflow-hidden">
+                {/* Email Header Preview */}
+                <div className="bg-neutral-50 border-b border-neutral-200 p-4 space-y-2">
+                  {/* To Section */}
+                  {(toName || toEmail) && (
+                    <div>
+                      <p className="text-xs text-neutral-500 uppercase tracking-wide font-medium">To</p>
+                      <p className="text-sm text-neutral-900 mt-1">
+                        {toName && toEmail ? `${toName} <${toEmail}>` : toName || toEmail}
+                      </p>
+                    </div>
+                  )}
+
+                  {/* Subject Section */}
+                  <div className="flex items-start justify-between">
+                    <div className="flex-1">
+                      <p className="text-xs text-neutral-500 uppercase tracking-wide font-medium">Subject</p>
+                      <p className="text-base font-semibold text-neutral-900 mt-1">{subject}</p>
+                    </div>
+                  </div>
+
+                  {/* From and Reply-To Section */}
+                  {(from || replyTo) && (
+                    <div className="flex gap-6 pt-2 border-t border-neutral-200">
+                      {from && (
+                        <div>
+                          <p className="text-xs text-neutral-500">From</p>
+                          <p className="text-sm text-neutral-900 mt-0.5">{displayFrom}</p>
+                        </div>
+                      )}
+                      {replyTo && (
+                        <div>
+                          <p className="text-xs text-neutral-500">Reply-To</p>
+                          <p className="text-sm text-neutral-900 mt-0.5">{replyTo}</p>
+                        </div>
+                      )}
+                    </div>
+                  )}
+                </div>
+
+                {/* Email Body */}
+                <div className="bg-white">
+                  <iframe
+                    sandbox="allow-same-origin"
+                    srcDoc={body}
+                    className="w-full border-0 block"
+                    style={{minHeight: '500px'}}
+                    title="Email preview"
+                    loading="lazy"
+                  />
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+      </DialogContent>
+    </Dialog>
+  );
+}