HTC TyTN User Manual page 125

To digitally sign and encrypt a new message
In the message list, tap Menu > Go To > Outlook E-mail.
1.
Tap New.
2.
3. Tap Menu > Message Options.
Select the Encrypt message and Sign message check boxes, and tap
4.
OK.
Verify the digital signature on a signed message you
receive
To verify a digital signature in the message that you receive, do the
following:
Open the Outlook e-mail message that has been digitally signed.
1.
At the top of the message, tap View Signature Status.
2.
Tap Menu > Check Certificate.
3.
Exchanging Messages and Using Outlook 125