You cannot have any Thunderbird email accounts. Email accounts come from email providers and Thunderbird is not a provider. It is email client software. The account that you reference is a gmail account. If your real question is can you add multiple accounts to the Thunderbird client the answer is yes. From the menu bar select File-New-Existing mail account From the AppMenu button select New Message-Existing mail account As for getting another email account, work with an email provider to setup an new account.