I know one that is easy to use, secure and working (because I very slighty helped with the development). http://www.mailvelope.com/ http://www.mailvelope.com/

I know one that is easy to use, secure and working (because I very slighty helped with the development). http://www.mailvelope.com/ http://www.mailvelope.com/ It is more secure than you would think - see http://www.mailvelope.com/blog/security-audit-and-v0.6-release http://www.mailvelope.com/blog/security-audit-and-v0.6-relea... it prevents from saving the drafts well. What is not yet iplemented are signatures