diff --git a/app/Jobs/SendCampaignEmailJob.php b/app/Jobs/SendCampaignEmailJob.php
index 4167206..4774b20 100644
--- a/app/Jobs/SendCampaignEmailJob.php
+++ b/app/Jobs/SendCampaignEmailJob.php
@@ -18,14 +18,14 @@ class SendCampaignEmailJob implements ShouldQueue
 {
     use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
 
-    public CampaignRecipient $recipient;
+    public int $recipientId;
 
     /**
      * Create a new job instance.
      */
-    public function __construct(CampaignRecipient $recipient)
+    public function __construct(int $recipientId)
     {
-        $this->recipient = $recipient;
+        $this->recipientId = $recipientId;
     }
 
     /**
@@ -33,9 +33,16 @@ public function __construct(CampaignRecipient $recipient)
      */
     public function handle(): void
     {
-        $recipient = $this->recipient;
-        $campaign = $this->recipient->campaign;
-        $contact = $this->recipient->contact;
+        $recipient = CampaignRecipient::query()
+            ->with(['campaign', 'contact'])
+            ->find($this->recipientId);
+
+        if (! $recipient) {
+            return;
+        }
+
+        $campaign = $recipient->campaign;
+        $contact = $recipient->contact;
 
         try {
             Mail::to($contact->email)->send(
diff --git a/app/Services/CampaignService.php b/app/Services/CampaignService.php
index 04aa92b..d1644fb 100644
--- a/app/Services/CampaignService.php
+++ b/app/Services/CampaignService.php
@@ -33,10 +33,15 @@ class CampaignService
      */
     public function send(Campaign $campaign): void
     {
-        foreach ($campaign->recipients as $recipient) {
-            SendCampaignEmailJob::dispatch(
-                recipient: $recipient,
-            );
-        }
+        $campaign
+            ->recipients()
+            ->select('id')
+            ->chunkById(100, function ($recipients): void {
+                foreach ($recipients as $recipient) {
+                    SendCampaignEmailJob::dispatch(
+                        recipientId: $recipient->id,
+                    );
+                }
+            });
     }
 }