Send the message with no encryption (cleartext).
This option will encrypt the current message, using PGP and the recipients personal public key, and then send it. You MUST have the public key of the recipient stored in your addressbook or else this option will fail. If you have the public key for the recipient in your addressbook and are still receiving errors, verify that the e-mail address in the recipient field matches the e-mail address where the public key is stored. The encrypted data will be attached to the outgoing message.
This option will digitally sign the current message using PGP and your personal private key. If you have not already entered the passphrase for your private key during this session you will be prompted for it. The recipient must have a copy of your public key to digitally verify your signature.
This option will first digitally sign your message and then will encrypt the resulting output. See the "PGP Encrypt Message" and "PGP Sign Message" entries for further information.
This option will encrypt the current message, using PGP and a passphrase, and then send it. You will be prompted for the passphrase that should be used for the encryption. Give the passphrase to the recipient through a secure channel (e.g. personal conversation, phone). The encrypted data will be attached to the outgoing message.
This option will first digitally sign your message and then will encrypt the resulting output with a passphrase. See the "PGP Encrypt Message with passphrase" and "PGP Sign Message" entries for further information.
This option will encrypt the current message, using S/MIME and the recipient's certificate, and then send it. You MUST have the certificate of the recipient stored in your addressbook or else this option will fail. If you have the certificate for the recipient in your addressbook and are still receiving errors, verify that the e-mail address in the recipient field matches the e-mail address where the certificate is stored. The encrypted data will be attached to the outgoing message.
This option will digitally sign the current message using S/MIME and your certificate. If you have not already entered the passphrase for your certificate during this session you will be prompted for it.
This option will first digitally sign your message and then will encrypt the resulting output. See the "S/MIME Encrypt Message" and "S/MIME Sign Message" entries for further information.