Immediately return in pages function when sending email through contact form

functions/contact.ts

@@ -29,13 +29,15 @@ export const onRequest: PagesFunction<Env> = (context) => {
       // Must have some kind of identifiable information for me to actually care about them.
       if ((fullName || email) && message) {
         try {
-          await context.env.SERVICE.sendEmail({
+          context.waitUntil(
+            context.env.SERVICE.sendEmail({
               fullName,
               organisation,
               email,
               mobile,
               message,
-          });
+            })
+          );
         } catch (e) {
           return new Response(e);
         }