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Overview of e-mail security
You can help prevent impersonation, tampering, and eavesdropping when sending e-mail messages from
your Outlook e-mail account by using Secure Multipurpose Internet Mail Extensions (S/MIME) digital
signatures and encryption.
A signature helps prevent impersonation and tampering. Impersonation occurs when a hacker sends e-mail
messages and pretends to be someone else. Tampering occurs when a hacker intercepts your e-mail
messages and changes the message without the recipient's knowledge.
Signing a message applies the sender's certificate (and public key) to the message. This proves to the
recipient that the message is from the sender and not from an imposter.
Encryption helps prevent eavesdropping, which occurs when a hacker intercepts and reads your e-mail
messages. Using a cryptographic message format such as S/MIME for encryption helps improve e-mail
privacy because it converts plain, readable text of the message into cipher (scrambled) text. The sender's
messaging program uses the recipient's public key to encrypt (lock) the e-mail message and attachments.
Only the recipient who has the private key that matches the public key you used to encrypt the message can
decipher (unscramble) the message.
A certificate is a digital means of proving your identity. When you send a digitally signed message, you are
sending your certificate and public key. Certificates can expire or be revoked.
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.
Download a complete e-mail message
You can save e-mail messages and retrieve them at any time when you synchronize or connect to your mail
server.
1. On the Home screen, press the left soft key [Start] [All Programs], select Messaging and press
OK.
2. Select an e-mail account and the message to download.
3. Press [Menu] [Download Message]. The complete message is retrieved the next time you
synchronize or connect to your e-mail server and send and receive e-mail.
Download an attachment
In an open message with an attachment to download, press the attachment. The attachment is downloaded
the next time you synchronize or connect to your e-mail server and send and receive e-mail.
NOTE: If there are multiple attachments in the message, all attachments are downloaded.
Mark a folder for synchronization
When you synchronize your Outlook e-mail account with your PC, the same Inbox folders that are in Outlook
on your PC are created on your phone.
1. On the Home screen, press the left soft key [Start] [All Programs], select Messaging and press
OK.
2. Select Outlook E-Mail.
3. Press [Menu] [Folders].
4. Press [Menu] [Show All Folders].
5. Press [Menu] [Manage Folders].
6. Select a folder to synchronize and press Show Sync Folder.
7. Press [Done]. The next time you synchronize, the folder(s) that you marked on your phone are
synchronized with the corresponding folders in Outlook on your PC.
Add a picture to an e-mail message
You can retrieve pictures that have been downloaded to your phone and insert them into your e-mail
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