The process of receiving signed e-mails can be illustrated as follows.
Person A, who is external to the DME system, uses his private key to sign an e-mail, which he sends to user B. His e-mail application automatically attaches his public key.
The signed e-mail is sent through the Internet to the corporate collaboration system of DME user B.
DME sends a notification to user B's device that a new e-mail has arrived.
When user B synchronizes his DME client, the DME server will check if the public key of A exists on the server. If not, the key is extracted from the e-mail and stored in the DME server database.
DME sends the e-mail to B through the usual secure SSL connection, with an indication that the e-mail has been signed by A.
Users of the DME system can now use the public key of A to send encrypted e-mail to A. See Sending encrypted e-mail.
Note that if user B chooses the Reply function in a signed e-mail in the client, the reply will by default be signed also. See Sending signed e-mail.
