diff --git a/src/Symfony/Component/Mime/Header/Headers.php b/src/Symfony/Component/Mime/Header/Headers.php
index 5556f64a6d54f..f60cd474a6cb1 100644
--- a/src/Symfony/Component/Mime/Header/Headers.php
+++ b/src/Symfony/Component/Mime/Header/Headers.php
@@ -210,13 +210,23 @@ public static function isUniqueHeader(string $name): bool
     public function toString(): string
     {
         $string = '';
+        foreach ($this->toArray() as $str) {
+            $string .= $str."\r\n";
+        }
+
+        return $string;
+    }
+
+    public function toArray(): array
+    {
+        $arr = [];
         foreach ($this->getAll() as $header) {
             if ('' !== $header->getBodyAsString()) {
-                $string .= $header->toString()."\r\n";
+                $arr[] = $header->toString();
             }
         }
 
-        return $string;
+        return $arr;
     }
 
     /**
diff --git a/src/Symfony/Component/Mime/Tests/Header/HeadersTest.php b/src/Symfony/Component/Mime/Tests/Header/HeadersTest.php
index 00c21a35cf30f..2f4a1dd6358a8 100644
--- a/src/Symfony/Component/Mime/Tests/Header/HeadersTest.php
+++ b/src/Symfony/Component/Mime/Tests/Header/HeadersTest.php
@@ -231,4 +231,15 @@ public function testHeadersWithoutBodiesAreNotDisplayed()
         $headers->addTextHeader('Zip', '');
         $this->assertEquals("Foo: bar\r\n", $headers->toString());
     }
+
+    public function testToArray()
+    {
+        $headers = new Headers();
+        $headers->addIdHeader('Message-ID', 'some@id');
+        $headers->addTextHeader('Foo', str_repeat('a', 60).pack('C', 0x8F));
+        $this->assertEquals([
+            'Message-ID: <some@id>',
+            "Foo: =?utf-8?Q?aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa?=\r\n =?utf-8?Q?aaaa?=",
+        ], $headers->toArray());
+    }
 }