• Tools > Account Settings

or

• right click on mail account name in Folder Pane and select 'Settings'

• select the account name
• click on 'Account Actions'
• select 'Remove Account'
• click on OK

see image to aid.

Please note that if you have any emails in that account which you want to save then move them into a suitable folder in Local Folders before you remove the account.

Sorry but "Account Action" and "Remove account" does not exist.

Post an image of what you see. Show me the image of your 'Account Settings' window.

Another proble after add-on manually change folders was installed - the whole view panels changed you can not read the accounts panel- it widened up. uread, total and size now also there. Sreenshots of the 2 problems added

another screenshot

you keep posting images of your Thunderbird user interface showing Folder Pane and not Account settings.

Only one image shows the Account Settings - second one on first posting, however, you have not included the full window, so it has cut off the section I need to see which is below the Local Account.

See image:

Account settings window

You are not showing only the Account Settings window, it is cut off at the bottom. For example there is no OK or Cancel button. Perhaps this is what you are seeing as well which explains why you cannot see Account Actions.

Try this:

Open Account Settings window and then minimize Thunderbird, so you can only see the Account Settings window

OR drag the Account Settings window to the side or above.

This is what the full Account Settings window should look like. See image.

Thank you, Problem solved. Do you have an solution how to change my TB view. It change after I tried to solve the previous problem by installing a add on to " manually change the folder. Now I do not know how to change it back. If I drag it thinner, then you cannot see the accounts

I solved the previous problem Thank you kindly for the support

How about going to Tools menu > add-ons and disabling the add-on!

Not that I can find a "manually change folders" on the add-on site.

I can find a Manually sort folders which does exactly what it says, but does not add and columns like you show. I can also find "Extra Folder Columns" which is designed to give the headings your referring to. The add-on page shows as the third image a right click or click option to turn the columns on and off.