Please explain in more detail

• what you're doing,
• what happens,
• what you expect to happen

I'm not sure what 'if you try to use a password in creation' means.

@chris1 Hi I'm not pleased to create a secret key without password. But thunderbird doesnt offer this possibility. Therefore I created a keepair with kleopatra and imported it into thunderbird. Or let me say I tried. Look at the errormessage in attachment. But look at the citation: "You should avoid having multiple personal keys. If you use two devices to read messages from the same email account, you probably want to be able to read the encrypted messages you receive on both devices. Therefore, only generate a personal key once. Then backup your personal key to a file. It is recommended that you use a strong password to protect that backup of your personal key, to make it difficult for anyone else to use your backup file to get your secret key. Copy that backup file to the other device, enter the password to unlock the backup, and then import the personal key on that device." >https://support.mozilla.org/en-US/kb/introduction-to-e2e-encryption<

It is obviously nesserary to switch with your key between devices. A password is absolutely necessary for this.

I'm not pleased to create a secret key without password.

If you use Kleopatra to create your new key pair, by any means you can do that with a passphrase. When importing that key into Thunderbird it will prompt you for the passphrase.

See https://support.mozilla.org/en-US/kb/openpgp-thunderbird-howto-and-faq#w_how-is-my-personal-key-protected for how Thunderbird protects your personal key.

Having said that, Thunderbird will support a separate, user defined OpenPGP passphrase in a later release. See https://bugzilla.mozilla.org/show_bug.cgi?id=1679278

Therefore I created a keepair with kleopatra and imported it into thunderbird.

Yet you posted a screenshot with a Kleopatra error message basically saying it failed to create a new key pair. So your problem seems to be with Kleopatra, not Thunderbird?

Thanks Chris1, using the master password I see more security for the private key. Thunderbird with pgp is very easy and convenient to use. But, it would be important if the reference to the main password for Thunderbird appeared unmissable in the phase of generating the key pair. If this is changed, I will consider the thread resolved.