The officially supplied Yahoo POP settings are:

Incoming Mail (POP) Server

   Server - pop.mail.yahoo.com
   Port - 995
   Requires SSL - Yes

Outgoing Mail (SMTP) Server

   Server - smtp.mail.yahoo.com
   Port - 465 or 587
   Requires SSL - Yes
   Requires TLS - Yes (if available)
   Requires authentication - Yes

Your login info

   Email address - Your full email address (name@domain.com.)
   Password - Your account's password.
   Requires authentication - Yes

If these don't work contact Yahoo's support.

Can anyone state that Yahoo POP is working for them?

GeorgeSlv said

Can anyone state that Yahoo POP is working for them?

Yes. It is working fine for me.

How about someone in Canada.

GeorgeSlv said

How about someone in Canada.

what you think Canadians are being picked on by Yahoo?

I think you would do better posting some support information, rather than the approach you are taking.

Please add the troubleshooting information to your post To find the Troubleshooting information:

• Open Help (or click on three-line-icon and select Help)
• Choose Troubleshooting Information
• Use the button Copy to clipboard to select all. Do not check box "Include account names"!
• Paste this in your post.

Please also add the result of these troubleshooting steps to your post

• Does Thunderbird work in TB Safe mode (see Thunderbird Safe Mode)?
• Do you use anti-virus and firewall software? What is the version?

Matt, that was an absolutely rotten attitude to my research efforts. You have spoiled this experience.