Encrypt and Sign Messages

You can encrypt and digitally sign messages you send. Encrypting a message scrambles the information so that only the recipients you specify can read it. Signing a message ensures the recipient that you are the author of the message, and that no one has tampered with the information in it. This is a digital signature, which is different than a personal signature. A digital signature is a scrambled version of your signature.

To Encrypt and Sign a Message

From a message you are creating, check Sign or Encrypt before sending the message.

To Encrypt or Sign all Messages You Send

1. Click Preferences.
2. Expand Mail, and then click General.
3. Under Sending, select Sign mail that you send and Encrypt mail that you send.
4. (Optional) To send S/MIME encrypted mail even if the recipient's certificate is not a trusted certificate, select Always trust Internet certificates for S/MIME encrypted mail that you send.

Note Recipients need a Notes certified public key for you to encrypt a message. If you try to send an encrypted message to a recipient who does not have a public key, you are given the option to send an unencrypted message.

Mail Preferences

Delivery Options

Mail - Frequently Asked Questions