diff --git a/includes/simplenews.mail.inc b/includes/simplenews.mail.inc
index e5b3f2b..5f65a4a 100644
--- a/includes/simplenews.mail.inc
+++ b/includes/simplenews.mail.inc
@@ -37,6 +37,9 @@ function simplenews_add_node_to_spool($node) {
 
   // Update simplenews newsletter status to send pending.
   simplenews_newsletter_update_sent_status($node);
+
+  // Notify other modules that a newsletter was just spooled.
+  module_invoke_all('simplenews_spooled', $node);
 }
 
 /**
diff --git a/simplenews.api.php b/simplenews.api.php
index 47536b0..27033ba 100644
--- a/simplenews.api.php
+++ b/simplenews.api.php
@@ -102,6 +102,13 @@ function hook_simplenews_subscription_operations() {
 }
 
 /**
+* Act after a newsletter has been spooled.
+*/
+function hook_simplenews_spooled($category) {
+
+}
+
+/**
  * Act after a newsletter category has been saved.
  *
  * @ingroup newsletter