Just a suggestion. When you disable Junk Mail in settings, you should automatically hide the Junk column
The Junk Status doesn't make sense if you disable the adaptive Junk mail.
Also, more important. You should disable by default. Most people use the mail server as a spam filter and having both causes problems. I have to tell all my customers to turn it off or they blame the server for missing messages.
Alle svar (1)
Personally I prefer local spam filtering. as most users these days use IMAP and those using IMAP share a spam folder in Thunderbird with the server. I just do not understand your issue.
Unless your "customers" are using yahoo, which is a whole collection of broken parts. But that is a problem with that specific provider not being capable of providing the services they contract to supply. Not a reason to modify a mail client. https://finance.yahoo.com/news/verizon-basically-writing-off-oath-202309680.html