changed port number

bang.go

@@ -333,6 +333,6 @@ func main() {
 	http.HandleFunc("/email", withCORS(receiveEmailHandler))
 	http.HandleFunc("/mailbox", withCORS(listMailboxHandler))
 	http.HandleFunc("/mailbox/open", withCORS(markEmailOpenedHandler))
-	log.Println("Email server running on :8080")
-	log.Fatal(http.ListenAndServe(":8080", nil))
+	log.Println("Email server running on :80")
+	log.Fatal(http.ListenAndServe(":80", nil))
 }