When I try to send an email from my dmonkman1@cogeco.ca account, I regularly get a message stating "Password required for outgoing (SMTP) server. When I enter the password associated with this email account, the same message reappears. The strange thing is that sometimes this message does not appear and the emails do send properly. I also sometimes get a message saying that the email was sent but that a copy was not placed in my Sent folder. I've updated Thunderbird (115.12.1 64-bit) but the problem still occurs. I've also spoken to my internet provider (Cogeco) and they're telling me that it's a Thunderbird issue.

Please help!