fix

client/gui.py

@@ -784,6 +784,7 @@ class BitcoinGUI:
         # redundant with aliases
         #if label and payto:
         #    self.labels[payto] = label
+        if re.match('^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$', payto):
             payto_address = self.get_alias(payto, interactive=True)
             if payto_address:
                 payto = payto + ' <' + payto_address + '>'