Sorry, no positive results, outgoing mail wiindow still has the strange lines of text, it is impossible to mail anthing out, my password is correct

You have something really messed up in your preferences. This probably all stems from when you edited the outgoing smtp and set up an incorrect server name. Even though it was corrected in Account Settings, I bet the 'prefs file still uses soemthign incorrect, but deleting all those files should have corrected that problem. Why you have a load of appended data in an outgoing file - not sure what you did. I do recognise the data .

I would create a new profile and add the gmail account. How to create a new Profile:: click on 'Help' and you will see a drop down list - click on 'More TRoubleshooting Information' Under 'Application Basics' - near the bottom see 'Profiles' - click on 'about:profiles' It opens in a new tab. This shows you your list of profiles. Near the top - click on 'Create a new Profile' Click on 'Next' Enter a new profile name: Default User Click on 'Finish'

That 'Default User' profile will now get added to the list of Profiles. It will say: Profile : Default User Default Profile: No Root Directory:C:\Users\User name\Roaming\Profiles\profile name.default user Local Directory: C:\Users\User name\Local\Profiles\profile name.default user

Below will be some buttons. Click on 'Set as default profile' Click on 'Launch Profile' It opens in a new window

Close/Exit the original Thunderbird window and start to use the new Thunderbird window.

If you do not see 'File', Edit, View etc because top menu is not visible: Press 'Alt' key and it will appear - then quickly use 'View' > 'Toolbars' > select 'Menu Bar'

File > New > Existing Mail Account Enter name Enter full gmail email address Enter password Select checkbox 'Remember password' Click on 'Continue' It will auto look for IMAP settings.

Check it has got settings correctly - click on 'Configure Manually' Make sure 'Authentication Method: is set up as 'OAuth2' for both incoming imap and outgoing smtp. If all is ok then click on 'Done'

You will get prompted by google to enter email address and password and then OAuth token is created.

Dear Toad-Hall, Success!!!., Everything works! It is your success. I wish I could celebrate it with you over a glass of sth (whisky, wine, vodka or milk?). Thank you very, very much. With best regards, witoldrem

Sorry it look a while, but in your case things were a bit messy.

Previously you said "I am 80 years old and do not belong to the world of today." But I say you are doing just fine. Once I had worked out what you needed in order to follow instructions, you were perfectly on the ball.

It's good to hear you are up and running again and I'm glad to have helped you. Take care :)