diff --git a/packages/php/email-editor/tests/integration/Integrations/Utils/Send_Preview_Email_Test.php b/packages/php/email-editor/tests/integration/Integrations/Utils/Send_Preview_Email_Test.php
new file mode 100644
index 0000000000..fc763a864d
--- /dev/null
+++ b/packages/php/email-editor/tests/integration/Integrations/Utils/Send_Preview_Email_Test.php
@@ -0,0 +1,113 @@
+<?php
+/**
+ * This file is part of the MailPoet plugin.
+ *
+ * @package MailPoet\EmailEditor
+ */
+
+declare(strict_types = 1);
+namespace MailPoet\EmailEditor\Integrations\Utils;
+
+use MailPoet\EmailEditor\Engine\Renderer\Renderer;
+
+/**
+ * Unit test for Send_Preview_Email_Test class.
+ */
+class Send_Preview_Email_Test extends \MailPoetTest {
+
+	/**
+	 * Instance of Send_Preview_Email
+	 *
+	 * @var Send_Preview_Email
+	 */
+	private $send_preview_email;
+
+	/**
+	 * Set up before each test
+	 */
+	public function _before() {
+		parent::_before();
+
+		$renderer_mock = $this->createMock( Renderer::class );
+		$renderer_mock->method( 'render' )->willReturn(
+			array(
+				'html' => 'test html',
+				'text' => 'test text',
+			)
+		);
+
+		$this->send_preview_email = $this->getServiceWithOverrides(
+			Send_Preview_Email::class,
+			array(
+				'renderer' => $renderer_mock,
+			)
+		);
+	}
+
+	/**
+	 * Test it sends preview email.
+	 */
+	public function testItSendsPreviewEmail(): void {
+		$this->send_preview_email->send_email = function () {
+			return true;
+		};
+
+		$email_post = $this->tester->create_post(
+			array(
+				'post_content' => '<!-- wp:button --><div class="wp-block-button"><a class="wp-block-button__link has-background wp-element-button">Button</a></div><!-- /wp:button -->',
+			)
+		);
+
+		$post_data = array(
+			'newsletterId' => 2,
+			'email'        => 'hello@example.com',
+			'postId'       => $email_post->ID,
+		);
+
+		$result = $this->send_preview_email->send_preview_email( $post_data );
+
+		verify( $result )->equals( true );
+	}
+
+	/**
+	 * Test it throws an exception with invalid email
+	 */
+	public function testItThrowsAnExceptionWithInvalidEmail(): void {
+		$this->expectException( \InvalidArgumentException::class );
+		$this->expectExceptionMessage( 'Invalid email' );
+		$post_data = array(
+			'newsletterId' => 2,
+			'email'        => 'hello@example',
+			'postId'       => 4,
+		);
+		$this->send_preview_email->send_preview_email( $post_data );
+	}
+
+	/**
+	 * Test it throws an exception when post id is not provided
+	 */
+	public function testItThrowsAnExceptionWhenPostIdIsNotProvided(): void {
+		$this->expectException( \InvalidArgumentException::class );
+		$this->expectExceptionMessage( 'Missing required data' );
+		$post_data = array(
+			'newsletterId' => 2,
+			'email'        => 'hello@example.com',
+			'postId'       => null,
+		);
+		$this->send_preview_email->send_preview_email( $post_data );
+	}
+
+	/**
+	 * Test it throws an exception when the post cannot be found
+	 */
+	public function testItThrowsAnExceptionWhenPostCannotBeFound(): void {
+		$this->expectException( \Exception::class );
+		$this->expectExceptionMessage( 'Invalid post' );
+		$post_data = array(
+			'newsletterId' => 2,
+			'email'        => 'hello@example.com',
+			'postId'       => 100,
+		);
+		$this->send_preview_email->send_preview_email( $post_data );
+	}
+}
diff --git a/packages/php/email-editor/tests/integration/_bootstrap.php b/packages/php/email-editor/tests/integration/_bootstrap.php
index 4a776f9557..8ee0e45315 100644
--- a/packages/php/email-editor/tests/integration/_bootstrap.php
+++ b/packages/php/email-editor/tests/integration/_bootstrap.php
@@ -29,6 +29,7 @@ use MailPoet\EmailEditor\Engine\Templates\Utils;
 use MailPoet\EmailEditor\Engine\Theme_Controller;
 use MailPoet\EmailEditor\Integrations\Core\Initializer;
 use MailPoet\EmailEditor\Integrations\MailPoet\Blocks\BlockTypesController;
+use MailPoet\EmailEditor\Integrations\Utils\Send_Preview_Email;
 use MailPoet\EmailEditor\Utils\Cdn_Asset_Url;
 
 if ( (bool) getenv( 'MULTISITE' ) === true ) {
@@ -279,6 +280,14 @@ abstract class MailPoetTest extends \Codeception\TestCase\Test { // phpcs:ignore
 				);
 			}
 		);
+		$container->set(
+			Send_Preview_Email::class,
+			function ( $container ) {
+				return new Send_Preview_Email(
+					$container->get( Renderer::class ),
+				);
+			}
+		);
 		$container->set(
 			Email_Editor::class,
 			function ( $container ) {
@@ -288,6 +297,7 @@ abstract class MailPoetTest extends \Codeception\TestCase\Test { // phpcs:ignore
 					$container->get( Template_Preview::class ),
 					$container->get( Patterns::class ),
 					$container->get( Settings_Controller::class ),
+					$container->get( Send_Preview_Email::class ),
 				);
 			}
 		);