Hi! I have added an e-mail account to my Thunderbird and the support by the e-mail delivery says that I should just log in as it was an office365-account. I have done that and I can read the incoming mail, but it is not possible to answer or write a new message. I´ve tried different ways at the outgoing server, but always getting the same message: It was not possible to send the message. The message was not send because of the impermissible number of recipients (well, more or less - translated from swedish). So what to do? Y.S. Mikael Sanner