1. Just checking your MailWasher version. You've posted in the section for the really old MailWasher, but as you're a new user, I'm guessing that you've got the new MailWasher that looks like:

- MailWasher - 2023_0106 - New version.jpg (7.56 KiB) Viewed 11004 times
If your MailWasher doesn't look like that, you can skip to the last sentence of this post.
2.
Seeing the Yahoo! spam folder
Hopefully you've set up your Yahoo! account as an IMAP account. If not, delete the account in MailWasher and set it up to use IMAP.
Once you've done that, go to the MailWasher
Settings tab, then
Accounts on the left, and then select the Yahoo! account. You should see an IMAP tab, i.e.

- MailWasher - 2023_0106 - IMAP folders.jpg (11.36 KiB) Viewed 11004 times
In the list of folders, select the ones that you want MailWasher to check.
If all your folders aren't listed, click the <Refresh> button to update the list.
When you've selected all the folders that you want, click on the <Save> button.
3.
eldee wrote:I also added a wildcard spam address for MW to use. MW not detecting any spam. Now what?
I don't know what this means. If step 2 hasn't fixed things, and you have the new MailWasher, please post a new question in
viewforum.php?f=50 and hopefully someone will be able to help you.
If you have the old MailWasher, you're probably best contacting Firetrust Support at
[email protected] since, as you can see, not many people come to this section of the forum these days.