


If you delete one, it will ask you for it again when you try and use it. Using Secure Master Password Open Thunderbird in Windows OS Click on Tools Then go to Options And click Privacy Click on Passwords Tick the check box with. From there, you can show the passwords and delete the passwords. You can then click the Saved Passwords button to get a list of the passwords Thunderbird has saved. After updating and saving, you need to close Thunderbird and re-open This can be confirmed by going to the Preferences / Security / Passwords in which the most recent build of Thunderbird as of 03/2018 will allow you to click/focus on the password (after clicking, show password) and allow you to update the password with the "correct" outbound mail password. This is due to the fact that Mozilla Thunderbird assumes that the account credentials, both of which may be the email address use's the "SAME" password. This may take place if you use a "smart host" for email or a 3rd party outbound mail service. Issue: After adding an email account to Thunderbird, inbound mail works fine, but outbound mail is failing with an authentication error.
