In a secured exchange, the first step is again to sign and time-stamp the signature with a certificate issued by external certified authorities ❶. The document plus the signature ❷ and the time-stamp token are then inserted into an XML structure and sent via ArchiveLink and through the Rama Connector to the KeyVelop Server ❸. The validity of the signature can be checked by the authority through the Proof Server ❹.  The Kevelop Server then creates an electronic envelope (Keyvelop) containing the recipient's email address. It sends a mail to the recipient with a hyperlink❺. When the recipient clicks the link, he is connected to the Kevelop Server. After logging, and if he is properly authenticated, he is allowed to open the Keyvelop residing on the server, and to download the document.