""Most existing message encryption solutions require both the sender and recipient to have installed copies of the software that is being used. But with MailCryptor, the recipient of the encrypted message does not need any software other than Microsoft Internet Explorer or any e-mail client such as Microsoft Outlook, Outlook Express or Eudora, etc. installed on his/her computer to decrypt it. The decryption process does not require a connection to the Internet. This is the most unique feature of MailCryptor.
""Features: 128-bit symmetric encryption cipher Browser based decryption process (no software requirement for decryption) Auto generation of formatted HTML Import capabilities from text and rich text (rtf) files Supports Rich Text formatting in the message Preview Encrypted Message Copy Encrypted Message to Clipboard""