HTC 3100, 3125 user manual Digitally sign and encrypt all messages, Click Menu Options

48 Synchronizing Information and Setting Up E-mail Security

3.6 Setting Up Email Security

Windows Mobile on your phone protects your Outlook emails through Secure/Multipurpose Internet Mail Extension (S/MIME), which allows you to digitally sign your messages as well as encrypt them.

Using authorization keys and certificates, S/MIME allows you to digitally sign your email messages to prove your identity to the recipients. Authorization keys are also used when encrypting messages to improve privacy and prevent undue tampering or hacking of your messages. You can encrypt a message with or without a certificate. However, to read an encrypted message, you need a valid certificate for decrypting email messages.

Note S/MIME encryption and digital signatures for Windows Mobile-based devices are available only with Exchange Server 2003 Service Pack 2 or a later version that supports S/MIME. If you aren’t using one of these products or have not yet synchronized, these options are unavailable.

Digitally sign and encrypt all messages

ActiveSync allows you to set up S/MIME email encryption and signing. You will have to obtain a valid certificate for signing or encrypting email before you will be able to sign or encrypt mail successfully.

1.On the Home screen, click Start > ActiveSync

2.Click Menu > Options

3.Select the E-mailinformation type and click Settings . On the E-mail Sync screen, click Menu > Advanced