I have just from Windows Live Mail to Thunderbird. I try to send a groupmail to aproximately fifty addresses and repeatedly get the answer "Check that and that address" and furthermore "there are no ASCII signs in the local partt of the receiver's address and is not supported yet".Another error message is: "User e + 5 digits failed to send password. E-post server mailin. comhem.se answered: ERROR 119 invalid user or password err 30. To me this is nothing that I understand I was just told that Thunderbird was much more reliable than WLM which can'r send groupmail at all. P.S. To you who helps me, explain very simple as I'm a bad computer user.