diff --git a/supabase/functions/send-notification/index.ts b/supabase/functions/send-notification/index.ts
index 0bbca82..4fa549c 100644
--- a/supabase/functions/send-notification/index.ts
+++ b/supabase/functions/send-notification/index.ts
@@ -223,7 +223,9 @@ async function sendViaMailgun(payload: EmailPayload, apiKey: string, domain: str
 function replaceVariables(template: string, variables: Record<string, string>): string {
   let result = template;
   for (const [key, value] of Object.entries(variables)) {
+    // Support both {key} and {{key}} formats
     result = result.replace(new RegExp(`{{${key}}}`, 'g'), value);
+    result = result.replace(new RegExp(`{${key}}`, 'g'), value);
   }
   return result;
 }