Hello, tech support. I am trying to set up Thunderbird as an email client to support my new email account with StartMail and am having trouble sending emails from Thunderbird. Receiving is just fine. I requested a trusted IMAP device through StartMail, and it gave me recommended server settings and a password. The SMTP server setting they wanted was 465, TLS, normal password, smtp.startmail.com. When I tried to set that up by adding an account on Thunderbird, Thunderbird's recommended server settings were 587, STARTTLS, normal password. When I tried to manually change the settings to StartMail’s recommendations, it would not allow me to save them. I don’t know if I should be trying to “add another account”. When checking the server settings for my username@startmail.com, the IMAP is set at SSL/TLS, normal, port 993 (all OK), and the SMTP is set at SSL/TLS, normal, 465, smtp.startmail.com (just like Startmail wants). Regardless – I can’t sent emails out from Thunderbird. When trying to send an email from Thunderbird, the error messages say “Logon to account with username… failed” and “sending of message failed – unable to authenticate to outgoing SMTP server – please check password or verify authentication method in Account Settings/outgoing server SMTP” I’m not that tech savvy, so if you could provide an answer with step by step instructions, that would be very helpful. Thanks.