I just installed Thunderbird (working elsewhere) on a Windows 11 machine, and used the 'auto setup' feature. Sending/receiving works fine, but for every message sent: 1. A pop-up appears, which reads 'Your message was sent but a copy was not placed in your sent folder (Sent) due to network or file access errors. You can retry or save the message to Local Folders/Sent-mydomain.com 2. The current command did not succeed. The mail server for account mydomain.com responded [TRYCREATE] Folder doesn't exist. (Failure). Sent messages appear just fine locally in Thunderbird, and also on Gmail, and they send fine as well, so I just need to disable the incorrect error messages. Thanks for any help (NOOB level tech savvy).