diff --git a/pg/messages-needing-contact-extraction.sql b/pg/messages-needing-contact-extraction.sql
new file mode 100644
index 0000000..8243bbb
--- /dev/null
+++ b/pg/messages-needing-contact-extraction.sql
@@ -0,0 +1,11 @@
+SELECT
+    uid,
+    original.hash AS hash,
+    header_size,
+    total_size
+FROM
+    original
+LEFT
+    JOIN contact ON original.hash = contact.hash
+WHERE
+    contact.hash IS NULL;