diff --git a/supabase/migrations/20251028184108_2c913e6e-149b-48d8-924a-773e3c6a42d7.sql b/supabase/migrations/20251028184108_2c913e6e-149b-48d8-924a-773e3c6a42d7.sql
new file mode 100644
index 00000000..7726d642
--- /dev/null
+++ b/supabase/migrations/20251028184108_2c913e6e-149b-48d8-924a-773e3c6a42d7.sql
@@ -0,0 +1,35 @@
+-- Backfill existing contact submissions into email threads
+-- This is a one-time migration to add initial messages to the email thread
+-- New submissions are automatically added by the edge function
+
+INSERT INTO contact_email_threads (
+  submission_id,
+  direction,
+  from_email,
+  to_email,
+  subject,
+  body_text,
+  message_id,
+  metadata,
+  created_at
+)
+SELECT 
+  cs.id as submission_id,
+  'inbound' as direction,
+  cs.email as from_email,
+  'admin@thrillwiki.com' as to_email,
+  cs.subject,
+  cs.message as body_text,
+  '<' || cs.ticket_number || '.' || cs.id || '@thrillwiki.com>' as message_id,
+  jsonb_build_object(
+    'category', cs.category,
+    'name', cs.name,
+    'backfilled', true
+  ) as metadata,
+  cs.created_at
+FROM contact_submissions cs
+WHERE cs.id NOT IN (
+  SELECT DISTINCT submission_id 
+  FROM contact_email_threads
+)
+AND cs.ticket_number IS NOT NULL;
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