The first thing to check is the spam flag in the message list. Is it red/orange or grey. Grey indicates your provider is moving the mail to spam/ considers the email spam and Thunderbird does not see the item as spam.

Note that Yahoo do not have any way to influence their spam filters. You mark the message as not spam and move it somewhere else and within minutes yahoo will reverse your actions. A thoroughly poor implementation in my opinion. But they still dominate in the USA.

You mean the little flame thing? Good question. I don't remember if it was on or not. I will check the next time I see it.

Thanks,

L

So the junk is always gray. I get few non-grey ones. I'll have to talk to my provider (Siteground) to see how I can improve control over that.

Thanks.