diff --git a/mailpoet/lib/Automation/Engine/Workflows/Trigger.php b/mailpoet/lib/Automation/Engine/Workflows/Trigger.php
new file mode 100644
index 0000000000..a4eb2d479e
--- /dev/null
+++ b/mailpoet/lib/Automation/Engine/Workflows/Trigger.php
@@ -0,0 +1,11 @@
+<?php declare(strict_types = 1);
+
+namespace MailPoet\Automation\Engine\Workflows;
+
+interface Trigger {
+  public function getKey(): string;
+
+  public function getName(): string;
+
+  public function registerHooks(): void;
+}