Step 5: Real-time broadcasting (NewEmailReceived event, channel routes, Livewire listener)

app/Events/NewEmailReceived.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace App\Events;
+
+use App\Models\Email;
+use Illuminate\Broadcasting\Channel;
+use Illuminate\Broadcasting\InteractsWithSockets;
+use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+
+class NewEmailReceived implements ShouldBroadcast
+{
+    use Dispatchable, InteractsWithSockets, SerializesModels;
+
+    /**
+     * Create a new event instance.
+     */
+    public function __construct(
+        public Email $email,
+    ) {}
+
+    /**
+     * Get the channels the event should broadcast on.
+     *
+     * Broadcasts on a public channel keyed by domain.
+     * Private user channels will be added when user-mailbox assignment is implemented.
+     *
+     * @return array<int, Channel>
+     */
+    public function broadcastOn(): array
+    {
+        return [
+            new Channel('mailbox.'.$this->email->domain),
+        ];
+    }
+
+    /**
+     * The event's broadcast name.
+     */
+    public function broadcastAs(): string
+    {
+        return 'new.email';
+    }
+
+    /**
+     * Get the data to broadcast.
+     *
+     * @return array<string, mixed>
+     */
+    public function broadcastWith(): array
+    {
+        return [
+            'id' => $this->email->id,
+            'unique_id_hash' => $this->email->unique_id_hash,
+            'recipient_email' => $this->email->recipient_email,
+            'sender_email' => $this->email->sender_email,
+            'sender_name' => $this->email->sender_name,
+            'domain' => $this->email->domain,
+            'subject' => $this->email->subject,
+            'preview' => $this->email->preview,
+            'attachments_json' => $this->email->attachments_json,
+            'attachment_size' => $this->email->attachment_size,
+            'is_read' => $this->email->is_read,
+            'received_at' => $this->email->received_at?->toISOString(),
+        ];
+    }
+}

app/Livewire/Mailbox.php

@@ -40,6 +40,37 @@ class Mailbox extends Component
 
     public $availableDomains = ['imail.com', 'devmail.ai', 'temp-inbox.net'];
 
+    /**
+     * Get Reverb/Echo event listeners for the current mailbox domain.
+     *
+     * @return array<string, string>
+     */
+    public function getListeners(): array
+    {
+        $currentMailbox = collect($this->activeMailboxes)->firstWhere('id', $this->currentMailboxId);
+        $domain = $currentMailbox ? explode('@', $currentMailbox['address'])[1] ?? '' : '';
+
+        if (empty($domain)) {
+            return [];
+        }
+
+        return [
+            "echo:mailbox.{$domain},.new.email" => 'onNewEmail',
+        ];
+    }
+
+    /**
+     * Handle a new email broadcast event from Reverb.
+     *
+     * @param  array<string, mixed>  $eventData  The email data from the broadcast.
+     */
+    public function onNewEmail(array $eventData): void
+    {
+        // TODO: When real data integration is complete, prepend the new email to the list.
+        // For now, trigger a component refresh to pick up new data.
+        $this->dispatch('$refresh');
+    }
+
     public function getEmailsProperty()
     {
         // Mock emails based on mailbox ID

routes/channels.php

@@ -2,6 +2,8 @@
 
 use Illuminate\Support\Facades\Broadcast;
 
-Broadcast::channel('App.Models.User.{id}', function ($user, $id) {
-    return (int) $user->id === (int) $id;
-});
+// Private channel: authenticated user can only listen to their own channel
+Broadcast::channel('user.{id}', fn ($user, $id) => (int) $user->id === (int) $id);
+
+// Public channel: mailbox.{domain} — no auth needed for temp email service
+// The domain channel is public so guests can receive real-time updates