Assalamu Alaikum
Secure encrypted e-mail is possible using gnupg – the Open Source alternative to
pgp – for details of gnupg see http://www.gnupg.org/
This allows keys of 2048 (and above) bits, which are unbreakable even by
Imperialist (Amrika!) intelligence agencies. Note that the current 1024 bit
gnupg key is