thunderbird

I have three email accounts with the same internet provider. I setup Thunderbird with these email accounts and I unified them. When I log in to the first account I get prompt to add user and password then I get prompted for the remain two emails account, then I get again prompted for the main account to enter my password which the "save password with password manager" is automatically checked on all three. Basically I prompted six times before being allowed in to my account. I would like to know what six times and how to I uncheck permanently not to us password manager to save my passwords. I do not want to save them. please provide assistance