I have a public PGP key of a recipient and I want to send an encrypted e-mail to them with Thunderbird. I don't have a PGP key pair myself. Is it possible to encrypt and send this e-mail with Thunderbird?
I can't find a way. If it's not possible, why not? I searched the Internet and found out, that PGP encryption doesn't require my PGP key. I've read that my own public key is used to encrypt the e-mail to store it in the Sent folder. I know that I need my own private key to sign the e-mail and following questions suggests that encrypted e-mails are automatically signed for security
Can't I somehow disable this to make it possible to encrypt and send an encrypted (not signed) e-mail without having my own PGP key?
Technically, it's possible to manually encrypt a message using only the recipient's public key, send the encrypted message with Thunderbird and decrypt the received message using the recipient's private key. There is only the recipient's key pair involved. Why does Thunderbird not support this?