Thunderbird will ask for a password when one is requested by the email server and there is not one stored in its memory.

Have you tried sending an email? Were you asked to provide a password?

When you go to Tools-Options-Security-Passwords-Saved Passwords you are saying that you have a password saved there for inbound (IMAP or POP) but there is nothing for SMTP?

That is true - there is IMAP inbound password but no info for outbound.

That is the answer to one question. Now what happens when you try to send an email?

Do you have some kind of password vault software working on your system. Many antivirus suites have bundled a app to remember passwords for you. Maybe that is causing the issue.

If you try to send something the SMTP server is going to ask for a password. Someone or something has to provide it. If it is not in Thunderbird then you might look at other applications.

When try to send an email I get a message that the server did not accept TB password. When I checked passwords, I find one for the incoming emails, which I do receive, but no information for the outgoing. How can I set up the outgoing?

I already told you that if there was no password being provided by someone or something you would be asked to provide one and not told that the email that WAS provided is wrong. Since you get the message that the password provided is not correct, it is coming from somewhere.

It is not a Thunderbird password, it is your email account password. If it is not stored in Thunderbird you need to find out what application on your computer is trying to supply the password.

Thanks for your help. I did have an outgoing password some time ago and was being blocked from sending emails. I have fiddled with the email server (ATT) password and somehow in that process my TB outgoing information disappeared. There is, to my knowledge, no application trying to supply the password. There is no password shown in TB for outgoing emails.

All I can say it that if you are getting a message from the email server that the password is incorrect then a password is being provided from somewhere. If the saved password page of Thunderbird is not showing a SMTP password it is highly unlikely that it is coming from Thunderbird.

Here is an article that tells you how to remove a forgotten master password. I am not suggesting that you have a master password or that it has any effect on what we are discussing here. The side effect of doing this is that it erases all saved email passwords too. You could try doing this to be sure that all saved password are erased and not just the unlikely case of it being hidden.

https://support.mozilla.org/en-US/kb/master-password

If that does not work I am not sure what to tell you other than some application besides Thunderbird is trying to provide a password to the email server. Passwords are not provided to the server request out of thin air.

When trying to send an email, I first get the message that SMTP server requires a password. After I provide that I get the message that login to outbound failed. Again, when I check TB email passwords, there is one for incoming, but no information at all for outgoing. I do appreciate your spending time with me on this problem.

So you are getting a request to enter a password and when you do it is rejected?

That is completely different and has nothing to do with any stored password in Thunderbird. It indicates that there are none.

What it does indicate is that you either do not know what your password is or you have a server setting that is incorrect.

You need to go to your email providers web mail page and make sure you can log into your account there using your username and password. If it fails there you need to reset your password with the provider. There usually is a link on there email help page to reset your password.

Once you have working password test it again using Thunderbird. If it fails there you need to be looking at the SMTP server settings to be sure they are what your provider is looking for.

Get a current list of settings from your provider and compare them with what you have in Thunderbird. You can see what is in Thunderbird by going to the menu bar and selecting: Tools-Account Settings-Outgoing Server (SMTP)

Use the Edit button if you need to change anything.

I am not sure that I am getting my situation across to you. My fault. But thanks for your help anyway. Bye

I am pretty sure I get your situation. You think that you can find a field somewhere in Thunderbird to enter your SMTP password. That does not happen.

If a password is needed and cannot be found in Thunderbird stores, you will be asked for one like you are now saying is happening. That is the only time that you will be asked for one. That is you chance to enter a correct password and ask Thunderbird to remember it.