diff --git a/changelog/fix-mailpoet-error-on-plugin-activation b/changelog/fix-mailpoet-error-on-plugin-activation
new file mode 100644
index 0000000000..dba54b316a
--- /dev/null
+++ b/changelog/fix-mailpoet-error-on-plugin-activation
@@ -0,0 +1,4 @@
+Significance: patch
+Type: fixed
+
+Fix error when activating MailPoet
diff --git a/includes/class-sensei.php b/includes/class-sensei.php
index 8936a38ad2..abfff73155 100644
--- a/includes/class-sensei.php
+++ b/includes/class-sensei.php
@@ -845,10 +845,19 @@ public function initialize_global_objects() {
 		 * @return {bool} Whether to enable feature.
 		 */
 		if ( apply_filters( 'sensei_email_mailpoet_feature', true ) ) {
-			if ( class_exists( \MailPoet\API\API::class ) ) {
-				$mailpoet_api = \MailPoet\API\API::MP( 'v1' );
-				new Sensei\Emails\MailPoet\Main( $mailpoet_api );
-			}
+			add_action( 'mailpoet_initialized', [ $this, 'initialize_mailpoet' ] );
+		}
+	}
+
+	/**
+	 * Initialize MailPoet integration.
+	 *
+	 * @since $$next-version$$
+	 */
+	public function initialize_mailpoet() {
+		if ( class_exists( \MailPoet\API\API::class ) ) {
+			$mailpoet_api = \MailPoet\API\API::MP( 'v1' );
+			new Sensei\Emails\MailPoet\Main( $mailpoet_api );
 		}
 	}