"No password means no e-mails" while at the same time you "can access my e-mails without entering a password"? Which is which?

There seems to be no e-mail password entry in Accounts.

What do you mean?

my e-mail provider requires a password or authentication. Whilst other e-mail apps have authentication entry (see attached) Thunderbird doesn't and as such opening of the emails in the inbox is prevented thereby rendering the app useless.

perhaps we can just start this discussion all over again. You appear to think there should be something in account options that has never ever existed in Thunderbird. and I mean even when Netscape were doing it in the 1990s. So your comments just don't ring any bells with those supporting Thunderbird.

Thunderbird has a password manager see https://support.mozilla.org/kb/password-manager-remember-delete-change-tb

However that is quite unlikely to fix your issue, because really you have not said what it is. Is it that you are not asked for a password and you used to be?

This is quite common following an update if your anti virus chokes on the changes. With V78 there is the added issue of TLS.1.0 and 1.1 no longer being offered as they are old, decades old. See https://support.mozilla.org/en-US/kb/thunderbird-78-faq#w_after-upgrading-to-thunderbird-78-i-cannot-get-or-send-email-messages

I have removed completly 78.4.3 and loaded up 68.12.1. 32bit on loading up I was asked for my password, entered it and everything works fine. This I have done over the last 10 years using Thunderbird, a great programme. However 78.4.3 64 bit doesn't ask for a password and as a result the server on which my e-mails are stored www.netvigator.com refuses access and the App can't function. Why this occures i don't know but I have to use an earlier version to get me e-mails and your latest version fails in this regards regards rod