I've been using Thunderbird for about 8 years now, migrating the configuration from version to version. Currently I have two accounts it picks up email from. I want to add a third account but everytime I do this, it creates a bunch of new folders with the name of the account in my folder tree. This is undesirable, mainly because it looks terrible and it's also dodging the default filtering I have set up globally for received messages. How do I create a new mail account without it making new folders and just using the local folders like the other accounts already do? I do not use Thunderbird's internal spam filtering, I use popfile and use message filters to sort the emails by headers Popfile adds to my messages. I do not understand why it won't let me make a new account like the other accounts without making a special folder for the new account. Please help?