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For Instant Messaging: http://www.scatterchat.com/
ScatterChat is a secure instant messaging client designed for non-technical users who require secure and anonymous communications. Our typical end-users include human rights and democracy advocates operating in hostile territory. ScatterChat is also a valuable tool for anyone requiring secure communications.
ScatterChat's security features include resiliency against partial compromise, immunity from replay attacks, and limited resistance to traffic analysis... all reinforced through a pro-actively secure design.For E-mail: http://www.safe-mail.net/
Safe-mail is the most secure, easy to use communication system. It includes encrypted mail system with collaboration features and document storage functions. Always accessible at any time from anywhere!
3 Mb space is free. More space and functionality is supplied under Premium Packages. There are no advertisements, downloads or cookies. Safe-mail supports most hardware platforms and any operating system. Includes file storage, spam filters and anti virus protection. Full compatibility with most browsers, email clients and all relevant protocols including POP, SMTP, IMAP, S/MIME and PKI.