System and method for controlling the downstream preservation and destruction of electronic mail

摘要: A system and method for controlling the downstream preservation destruction of electronic mail by encrypting limiting access to encrypted file based on registration recipient e-mail addresses, detection restriction output functionality available recipient. The procedure limits recipients included an control list, who receive a pre-configured reader then authenticate their address via known SMTP Server. sender is provided with dialog determining limitations recipient: whether be inaccessible after certain period time, may copy or print and/or its attachments, password required read e-mail. These comprise policy applicable e-mail, being adapted decrypt apply policy.