Windows 10: Suddenly cannot open my email accounts (gmail/cox.net/yahoo)

I can see that these email accounts are there, but when I click, they don't open into my emails.

:)

 

Yahoo Conflict With Gmail POP3

I opened an account with Gmail some months ago to use their POP3 service to collate my various Yahoo and Hotmail accounts in one place. All of a sudden, about two weeks ago, I find that I am unable to send from my Yahoo email address even though they were previously working on Gmail and all are well used friends and family email addresses.
The problem happens in specific combinations, that is, sending from my Yahoo account to someone else's Yahoo account via Gmail and also it didn't work when I sent from my Yahoo, via Gmail, to my Hotmail, which I have registered to Gmail POP3. Both got bounced back.

How do I circumvent this problem and resume normal service.

Thanks,
Tom.

 

Forwarding Yahoo Email on Android Phone?

I'm wondering if something is possible...I'll try to explain as best I can. If I have the Yahoo Mail account forwarding to a Gmail account, is it possible to reply to the forwarded email but have the response come from the original Yahoo account that the email was forwarded from and not the Gmail account it was forwarded to?

The Yahoo email my boss uses has been around for a long time now and he doesn't want to send emails from an address no one knows.

 

Yahoo mail - alternative accounts

Sounds promising, I have a Gmail account. How do I verify the Yahoo account using it ?

I have sent several Gmails to john @yahoo.com, but all I get are mail failure emails back saying the account is not available. I also did this with OE a few times with the same result.

Why `o why can`t Yahoo be more explicit in their instructions. I am no dummy, but I give in on this one.