diff --git a/src/Illuminate/Contracts/Translation/HasLocalePreference.php b/src/Illuminate/Contracts/Translation/HasLocalePreference.php
new file mode 100644
index 000000000000..28030a9132de
--- /dev/null
+++ b/src/Illuminate/Contracts/Translation/HasLocalePreference.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Illuminate\Contracts\Translation;
+
+interface HasLocalePreference
+{
+    /**
+     * @return string|null
+     */
+    public function preferredLocale();
+}
diff --git a/src/Illuminate/Mail/PendingMail.php b/src/Illuminate/Mail/PendingMail.php
index f518c2cc7931..624bbc1e21c1 100644
--- a/src/Illuminate/Mail/PendingMail.php
+++ b/src/Illuminate/Mail/PendingMail.php
@@ -3,6 +3,7 @@
 namespace Illuminate\Mail;
 
 use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Contracts\Translation\HasLocalePreference;
 
 class PendingMail
 {
@@ -75,6 +76,10 @@ public function to($users)
     {
         $this->to = $users;
 
+        if (! $this->locale && $users instanceof HasLocalePreference) {
+            $this->locale($users->preferredLocale());
+        }
+
         return $this;
     }
 
diff --git a/tests/Integration/Mail/SendingMailWithLocaleTest.php b/tests/Integration/Mail/SendingMailWithLocaleTest.php
index b1692be8ae67..7fd3417e0998 100644
--- a/tests/Integration/Mail/SendingMailWithLocaleTest.php
+++ b/tests/Integration/Mail/SendingMailWithLocaleTest.php
@@ -7,6 +7,9 @@
 use Orchestra\Testbench\TestCase;
 use Illuminate\Support\Facades\Mail;
 use Illuminate\Support\Facades\View;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Contracts\Translation\HasLocalePreference;
 
 /**
  * @group integration
@@ -63,6 +66,98 @@ public function test_mail_is_sent_with_selected_locale()
         );
     }
 
+    public function test_locale_is_sent_with_model_locale()
+    {
+        $recipient = new TestEmailLocaleUser([
+            'email' => 'test@mail.com',
+            'email_locale' => 'ar',
+        ]);
+
+        Mail::to($recipient)->send(new TestMail());
+
+        $this->assertContains('esm',
+            app('swift.transport')->messages()[0]->getBody()
+        );
+    }
+
+    public function test_locale_is_sent_with_selected_locale_overriding_model_locale()
+    {
+        $recipient = new TestEmailLocaleUser([
+            'email' => 'test@mail.com',
+            'email_locale' => 'en',
+        ]);
+
+        Mail::to($recipient)->locale('ar')->send(new TestMail());
+
+        $this->assertContains('esm',
+            app('swift.transport')->messages()[0]->getBody()
+        );
+    }
+
+    public function test_locale_is_sent_with_model_locale_will_ignore_preferred_locale_of_the_cc_recipient()
+    {
+        $toRecipient = new TestEmailLocaleUser([
+            'email' => 'test@mail.com',
+            'email_locale' => 'ar',
+        ]);
+
+        $ccRecipient = new TestEmailLocaleUser([
+            'email' => 'test.cc@mail.com',
+            'email_locale' => 'en',
+        ]);
+
+        Mail::to($toRecipient)->cc($ccRecipient)->send(new TestMail());
+
+        $this->assertContains('esm',
+            app('swift.transport')->messages()[0]->getBody()
+        );
+    }
+
+    public function test_locale_is_not_sent_with_model_locale_when_there_are_multiple_recipients()
+    {
+        $recipients = [
+            new TestEmailLocaleUser([
+                'email' => 'test@mail.com',
+                'email_locale' => 'ar',
+            ]),
+            new TestEmailLocaleUser([
+                'email' => 'test.2@mail.com',
+                'email_locale' => 'ar',
+            ]),
+        ];
+
+        Mail::to($recipients)->send(new TestMail());
+
+        $this->assertContains('name',
+            app('swift.transport')->messages()[0]->getBody()
+        );
+    }
+
+    public function test_locale_is_sent_for_multiple_recipients_when_has_emaile_locale_contract_is_given()
+    {
+        $recipients = (new class extends Collection implements HasLocalePreference {
+            public function preferredLocale()
+            {
+                return 'ar';
+            }
+        })::make([
+            new TestEmailLocaleUser([
+                'email' => 'test@mail.com',
+                'email_locale' => 'es',
+            ]),
+            new TestEmailLocaleUser([
+                'email' => 'test.2@mail.com',
+                'email_locale' => 'en',
+            ]),
+        ]);
+
+        Mail::to($recipients)->send(new TestMail());
+
+        $this->assertContains('esm',
+            app('swift.transport')->messages()[0]->getBody()
+        );
+    }
+
     public function test_locale_is_set_back_to_default_after_mail_sent()
     {
         Mail::to('test@mail.com')->locale('ar')->send(new TestMail());
@@ -92,3 +187,16 @@ public function build()
         return $this->view('view');
     }
 }
+
+class TestEmailLocaleUser extends Model implements HasLocalePreference
+{
+    protected $fillable = [
+        'email',
+        'email_locale',
+    ];
+
+    public function preferredLocale()
+    {
+        return $this->email_locale;
+    }
+}