Email: add support for CC & BCC recipients

mylib/email.py

@@ -330,9 +330,8 @@ class EmailClient(
                 ", ".join(cc) if isinstance(cc, list) else cc,
                 ", ".join(bcc) if isinstance(cc, list) else bcc,
                 catch_addr,
-                cc,
             )
-            recipients = catch_addr if isinstance(catch_addr, list) else list(catch_addr)
+            recipients = catch_addr if isinstance(catch_addr, list) else [catch_addr]
         else:
             if cc:
                 recipients.extend(