encrypt the sent folder

[Eray Aslan]

Hi,

How can I make sure that all the emails in my Sent folder are encrypted
and can't be read without my private key?  In other words, I want my
email in my Sent folder to be encrypted even though the email sent on
the wire is plain text.

Encrypt to self option only works if I send an encrypted mail.  I
couldn't get it to work all the time.

here is my gpg.conf:
comment ""
no-mangle-dos-filenames
keyserver-options auto-key-retrieve verbose include-revoked include-subkeys
expert
default-recipient-self
encrypt-to 0x34697591
default-key 0x34697591

Email client is Thunderbird/Enigmail.  Mails are stored on IMAP server
if it makes any difference.

Thank you.
-- 
Eray