On Sat, 19 Nov 2011 08:19:29 +0100 Helmut Drodofsky wrote: > I would like to encrypt and decrypt Files sent as attachment in Linux, Mac > and Windows Systems Just the file attachments and not the email itself? gpg, zip/zipcloak/p7zip, Libre/Openoffice password function. Lots of other options. It depends on what kind of files you want to encrypt and how transparent and "idiot-proof" you want it to be. -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com www.creekfm.com - FIFTY THOUSAND WATTS of POW WOW POWER!