Would you like a FREE certificate so you can send signed and encrypted emails?
Well seek no further, here you can get a 100% free certificate so you can start encrypting and signing your mails (note for encrypting your recipients will also need to have a certificate, this is how it is supposed to work)… But you can sign mails right out of the box.
http://www.comodo.com/home/internet-security/free-email-certificate.php