Hi All, Can someone make me understand what is the difference between signed and encrypted e-mail. And when are they used? Thanks in advance.

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Hi, As I understand, the most difference is the encryption. 1. Encrypt e-mail message Only the recipient who has the private key that matches the public key used to encrypt the message can decipher the message for reading. private key: The secret key kept on the sender's computer that the sender uses to digitally sign messages to recipients and to decrypt (unlock) messages from recipients. public key: The key a sender gives to a recipient so that the recipient can verify the sender's signature and confirm that the message was not altered. Recipients also use the public key to encrypt (lock) e-mail messages to the sender. More information about “ how to encrypt outgoing e-mail” http://office.microsoft.com/en-us/outlook-help/encrypt-e-mail-messages-HP001230536.aspx 2. Digitally signing a message Digital signature include your certificate and public key. Certificate: A digital means of proving your identity. When you send a digitally signed message you are sending your certificate and public key. Certificates are issued by a certification authority, and like a driver's license, can expire or be revoked. More information about “Digitally sign outgoing e-mail” http://office.microsoft.com/en-us/outlook-help/secure-messages-with-a-digital-signature-HP001230539.aspx?CTT=5&origin=HP001230536Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.