Set up the Mozilla Thunderbird email client to connect to your Outlook.com account via IMAP and access messages, your online folders, and other Outlook.com features. Or connect to your Outlook.com account via the POP email protocol to download messages from your inbox to Thunderbird.
How to set up an email account in the Mozilla Thunderbird email client for (Gmail, Yahoo, Hotmail, Outlook)
Follow these steps to set up your Outlook.com email account in Thunderbird using IMAP.
Select Account Settings.
Select the Account Actions arrow and choose Add Email Account.