I am setting up Thunderbird on a new computer. I have installed the most recent version of TB. I have different att/yahoo emails that are separate att/yahoo accounts and not linked. When I set up the first account, it downloads all folders and emails perfectly. However, when I set up the next account, it will only download the same folders/emails from the first account. They are both set up as IMAP with unique usernames and passwords. I had the same issue when I transferred the TB profile from the old computer. I have no issues with different google email accounts. I have uninstalled TB and deleted all folders with no change when setting it up again. I have cleared all cookies on all browsers and closed them. Any solutions?