It's sorted. Apparently Thunderbird saves the log in information when it connects to the Yahoo website to confirm the account. This must be cleared between the set up of each account by clearing the startup cache or it uses the account you are still ...
Okay so I tried setting up my 4 @rogers.com accounts in the latest Thunderbird. Everything seemed to work fine but all logged into account #4 even though the other 3 are using their own separate usernames and passwords. Removed all accounts from Thun...