diff --git a/packages/js/email-editor/src/store/actions.ts b/packages/js/email-editor/src/store/actions.ts
index 13aec8378b..1c8469137a 100644
--- a/packages/js/email-editor/src/store/actions.ts
+++ b/packages/js/email-editor/src/store/actions.ts
@@ -146,21 +146,16 @@ export function* requestSendingNewsletterPreview(
 		} as Partial< State[ 'preview' ] >,
 	} as const;
 	try {
-		const url = window.MailPoetEmailEditor.json_api_root;
-		const token = window.MailPoetEmailEditor.api_token;
-		const method = 'POST';
-		const body = new FormData();
-		body.append( 'token', token );
-		body.append( 'action', 'mailpoet' );
-		body.append( 'api_version', window.MailPoetEmailEditor.api_version );
-		body.append( 'endpoint', 'newsletters' );
-		body.append( 'method', 'sendPreview' );
-		body.append( 'data[subscriber]', email );
-		body.append( 'data[id]', newsletterId.toString() );
+		const postId = select( storeName ).getEmailPostId();
+
 		yield apiFetch( {
-			url,
-			method,
-			body,
+			path: '/mailpoet-email-editor/v1/send_preview_email',
+			method: 'POST',
+			data: {
+				newsletterId,
+				email,
+				postId,
+			},
 		} );
 
 		yield {
diff --git a/packages/php/email-editor/src/Engine/class-email-api-controller.php b/packages/php/email-editor/src/Engine/class-email-api-controller.php
index c9202b7778..4e86bbf5d2 100644
--- a/packages/php/email-editor/src/Engine/class-email-api-controller.php
+++ b/packages/php/email-editor/src/Engine/class-email-api-controller.php
@@ -10,6 +10,8 @@ namespace MailPoet\EmailEditor\Engine;
 
 use MailPoet\EmailEditor\Validator\Builder;
 use WP_Post;
+use WP_REST_Request;
+use WP_REST_Response;
 
 /**
  * Class for email API controller.
@@ -35,6 +37,11 @@ class Email_Api_Controller {
 		// Here comes code saving of Email specific data that will be passed on 'email_data' attribute.
 	}
 
+	public function send_preview_email_data( WP_REST_Request $request ): WP_REST_Response {
+		$data = $request->get_params();
+		return new WP_REST_Response(['success' => true, 'data' => $data], 200);
+	}
+
 	/**
 	 * Returns the schema for email data.
 	 *
diff --git a/packages/php/email-editor/src/Engine/class-email-editor.php b/packages/php/email-editor/src/Engine/class-email-editor.php
index ddbed8e2ef..cc5c6fdb9f 100644
--- a/packages/php/email-editor/src/Engine/class-email-editor.php
+++ b/packages/php/email-editor/src/Engine/class-email-editor.php
@@ -94,6 +94,7 @@ class Email_Editor {
 			$this->extend_email_post_api();
 			$this->settings_controller->init();
 		}
+		add_action( 'rest_api_init', [ $this, 'register_email_editor_api_routes' ] );
 	}
 
 	/**
@@ -198,6 +199,16 @@ class Email_Editor {
 		);
 	}
 
+	public function register_email_editor_api_routes() {
+		register_rest_route('mailpoet-email-editor/v1', '/send_preview_email', [
+			'methods' => 'POST',
+			'callback' => array( $this->email_api_controller, 'send_preview_email_data' ),
+			'permission_callback' => function() {
+				return current_user_can('edit_posts');
+			}
+		]);
+	}
+
 	/**
 	 * Returns the schema for email theme data.
 	 *