Key Points

1. Download and install the latest version of Gpg4win
2. Create a new key pair
3. Look at the advanced settings
4. Export the public key
5. Open the key with notepad
6. Export the secret key
7. Import a public key into Kleaopatra into the imported certificates tab
8. Encrypt with the public of a person
9. Encrypt a file with a public key someone sent you by R-clicking on the file
10. Paste the encrypted data in your clipboard to a notepad document
11. Send the encrypted message to the owner of the public used to encrypt the data.
12. With the encrypted message on the clipboard, R-click the Kleaopatra icon on the system tray and choose decrypt
13. Copy the decrypted message on your clipboard to a new document in notepad.

https://www.youtube.com/watch?v=CEADq-B8KtI

How to Encrypt Email in Kleopatra

https://heimdalsecurity.com/blog/how-to-encrypt-email/