diff --git a/component/Web/Email.php b/component/Web/Email.php
index 2841b2f..6e03115 100644
--- a/component/Web/Email.php
+++ b/component/Web/Email.php
@@ -5,6 +5,7 @@
 namespace Phant\DataStructure\Web;
 
 use Phant\DataStructure\Web\EmailAddressAndName;
+use Phant\DataStructure\Web\EmailAttachmentList;
 
 class Email
 {
@@ -14,7 +15,8 @@ final public function __construct(
         public string $messageHtml,
         public EmailAddressAndName $from,
         public EmailAddressAndName $to,
-        public ?EmailAddressAndName $replyTo
+        public ?EmailAddressAndName $replyTo = null,
+        public ?EmailAttachmentList $attachmentList = null
     ) {
     }
 
@@ -27,7 +29,8 @@ public static function make(
         string $toEmailAddress,
         string $toName,
         ?string $replyToEmailAddress = null,
-        ?string $replyToName = null
+        ?string $replyToName = null,
+        ?EmailAttachmentList $attachmentList = null
     ): self {
         return new static(
             $subject,
@@ -44,7 +47,8 @@ public static function make(
             $replyToEmailAddress ? EmailAddressAndName::make(
                 $replyToEmailAddress,
                 $replyToName
-            ) : null
+            ) : null,
+            $attachmentList
         );
     }
 }
diff --git a/component/Web/EmailAttachment.php b/component/Web/EmailAttachment.php
new file mode 100644
index 0000000..01342f8
--- /dev/null
+++ b/component/Web/EmailAttachment.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Phant\DataStructure\Web;
+
+class EmailAttachment
+{
+    final public function __construct(
+        public string $name,
+        public string $content,
+        public string $type
+    ) {
+    }
+}
diff --git a/component/Web/EmailAttachmentList.php b/component/Web/EmailAttachmentList.php
new file mode 100644
index 0000000..1a0070e
--- /dev/null
+++ b/component/Web/EmailAttachmentList.php
@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Phant\DataStructure\Web;
+
+use Phant\DataStructure\Web\EmailAttachment;
+
+class EmailAttachmentList extends \Phant\DataStructure\Abstract\Collection
+{
+    final public function add(
+        EmailAttachment $attachment
+    ): self {
+        return $this->addItem($attachment);
+    }
+}
diff --git a/test/Web/EmailAttachmentListTest.php b/test/Web/EmailAttachmentListTest.php
new file mode 100644
index 0000000..d3d139f
--- /dev/null
+++ b/test/Web/EmailAttachmentListTest.php
@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Test\Web;
+
+use Phant\DataStructure\Web\{
+    EmailAttachment,
+    EmailAttachmentList,
+};
+use Test\Web\EmailAttachmentTest;
+
+final class EmailAttachmentListTest extends \PHPUnit\Framework\TestCase
+{
+    protected EmailAttachmentList $fixture;
+
+    public function setUp(): void
+    {
+        $this->fixture = new EmailAttachmentList();
+    }
+
+    public function testAdd(): void
+    {
+        $this->assertEquals(0, $this->fixture->getNbItems());
+
+        $this->fixture->add(
+            new EmailAttachment(
+                'file.pdf',
+                EmailAttachmentTest::Content,
+                'application/pdf'
+            )
+        );
+
+        $this->assertEquals(1, $this->fixture->getNbItems());
+    }
+}
diff --git a/test/Web/EmailAttachmentTest.php b/test/Web/EmailAttachmentTest.php
new file mode 100644
index 0000000..fe90fe7
--- /dev/null
+++ b/test/Web/EmailAttachmentTest.php
@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Test\Web;
+
+use Phant\DataStructure\Web\EmailAttachment;
+
+final class EmailAttachmentTest extends \PHPUnit\Framework\TestCase
+{
+    public const Content = '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';
+
+    public function testInterface(): void
+    {
+        $email = new EmailAttachment(
+            'file.pdf',
+            self::Content,
+            'application/pdf'
+        );
+
+        $this->assertIsString($email->name);
+        $this->assertEquals('file.pdf', $email->name);
+
+        $this->assertIsString($email->content);
+        $this->assertEquals(self::Content, $email->content);
+
+        $this->assertIsString($email->type);
+        $this->assertEquals('application/pdf', $email->type);
+    }
+}
diff --git a/test/Web/EmailTest.php b/test/Web/EmailTest.php
index 7154e42..0f8624a 100644
--- a/test/Web/EmailTest.php
+++ b/test/Web/EmailTest.php
@@ -8,12 +8,27 @@
     Email,
     EmailAddress,
     EmailAddressAndName,
+    EmailAttachment,
+    EmailAttachmentList,
 };
-
-use Phant\Error\NotCompliant;
+use Test\Web\EmailAttachmentTest;
 
 final class EmailTest extends \PHPUnit\Framework\TestCase
 {
+    protected EmailAttachmentList $attachmentList;
+
+    public function setUp(): void
+    {
+        $this->attachmentList = (new EmailAttachmentList())
+            ->add(
+                new EmailAttachment(
+                    'file.pdf',
+                    EmailAttachmentTest::Content,
+                    'application/pdf'
+                )
+            );
+    }
+
     public function testInterface(): void
     {
         $email = new Email(
@@ -31,7 +46,8 @@ public function testInterface(): void
             new EmailAddressAndName(
                 new EmailAddress('no-reply@acme.ext'),
                 'No reply'
-            )
+            ),
+            $this->attachmentList
         );
 
         $this->assertIsString($email->subject);
@@ -44,16 +60,22 @@ public function testInterface(): void
         $this->assertEquals('<p>Message</p>', $email->messageHtml);
 
         $this->assertIsObject($email->from);
+        $this->assertInstanceOf(EmailAddressAndName::class, $email->from);
         $this->assertEquals('contact@acme.ext', (string)$email->from->emailAddress);
         $this->assertEquals('Acme', $email->from->name);
 
         $this->assertIsObject($email->to);
+        $this->assertInstanceOf(EmailAddressAndName::class, $email->to);
         $this->assertEquals('john.doe@domain.ext', (string)$email->to->emailAddress);
         $this->assertEquals('John DOE', $email->to->name);
 
         $this->assertIsObject($email->replyTo);
+        $this->assertInstanceOf(EmailAddressAndName::class, $email->replyTo);
         $this->assertEquals('no-reply@acme.ext', (string)$email->replyTo->emailAddress);
         $this->assertEquals('No reply', $email->replyTo->name);
+
+        $this->assertIsObject($email->attachmentList);
+        $this->assertInstanceOf(EmailAttachmentList::class, $email->attachmentList);
     }
 
     public function testMake(): void
@@ -67,7 +89,8 @@ public function testMake(): void
             'john.doe@domain.ext',
             'John DOE',
             'no-reply@acme.ext',
-            'No reply'
+            'No reply',
+            $this->attachmentList
         );
 
         $this->assertInstanceOf(Email::class, $email);
@@ -82,15 +105,21 @@ public function testMake(): void
         $this->assertEquals('<p>Message</p>', $email->messageHtml);
 
         $this->assertIsObject($email->from);
+        $this->assertInstanceOf(EmailAddressAndName::class, $email->from);
         $this->assertEquals('contact@acme.ext', (string)$email->from->emailAddress);
         $this->assertEquals('Acme', $email->from->name);
 
         $this->assertIsObject($email->to);
+        $this->assertInstanceOf(EmailAddressAndName::class, $email->to);
         $this->assertEquals('john.doe@domain.ext', (string)$email->to->emailAddress);
         $this->assertEquals('John DOE', $email->to->name);
 
         $this->assertIsObject($email->replyTo);
+        $this->assertInstanceOf(EmailAddressAndName::class, $email->replyTo);
         $this->assertEquals('no-reply@acme.ext', (string)$email->replyTo->emailAddress);
         $this->assertEquals('No reply', $email->replyTo->name);
+
+        $this->assertIsObject($email->attachmentList);
+        $this->assertInstanceOf(EmailAttachmentList::class, $email->attachmentList);
     }
 }