On Fri, 15 May 2020 at 15:52, Joe Zeff <joe@zeff.us> wrote:
On 05/15/2020 12:39 PM, Robert McBroom via users wrote:
> Sometime in early April the mailserver on yahoo.com started sending much
> of the list entries to spam.  I noticed because all that was coming
> through on thunderbird were replies. Anyone had similar experience?

I also use Thunderbird, and once in a while, I find a message from the
list in the Junk folder.  I've also seen messages from the list with a
warning that T'bird thinks it's a scam.  And, I get newsletters about VA
benefits that are almost always marked as scams and the program doesn't
let you whitelist an address.

Thunderbird was classifying some messages from family members as junk,
but you have to configure it to automatically move messages flagged as junk 
from the inbox to a junk folder.  My ISP moves messages to a junk folder
before they reach the inbox.  Only a few get classed as junk by the 
Thunderbird filter.

Thunderbird junk detection does not have a great user interface.  It requires 
you to train junk detection, see https://support.mozilla.org/en-US/kb/thunderbird-and-junk-spam-messages:

Secondly, you must constantly train the filter by marking a quantity
 of GOOD messages as not junk - messages in your Inbox AND 
messages that have been filtered into other folders. You must use 
the keyboard upper case J, because there is no button - the 
"Not Junk" button appears only for messages that have already 
been classified as junk. Marking several messages per week will 
be sufficient. You can select many messages and mark them all 
at the same time. Note - unfortunately nothing in the user interface 
indicates whether a message has already been marked as "not junk". 

--
George N. White III