HTC ATHE100 Manuel D’Utilisation

Windows Mobile on your device protects your Outlook e-mails 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 e-mail 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 to decrypt it.

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 are not using one of these products, or have not 

yet synchronized, these options are unavailable.

ActiveSync allows you to set up S/MIME e-mail encryption and signing. 

You must obtain a valid certificate to sign and encrypt e-mail messages 

successfully.

1.  Tap Start > Programs > ActiveSync.
2.  Tap Menu > Options.
3.  Select the E-mail information type, and tap Settings. On the E-mail 

Sync Options screen, tap Advanced.

          

Synchronizing Information and Setting Up E-mail Security  77