HP 430se - Manual (Page 70)

64 Hewlett-Packard Jornada 430/430se Palm-size PC
The mail that you receive using a dial-up connection appears in
the Inbox folder on your P/PC, together with the mail you
synchronize with your desktop computer. Messages that you
receive remotely are linked to your mail server rather than your
desktop computer.
Working online
You can work online, which means that you read and respond to
messages while connected to the server. Messages are sent as
soon as you tap Send, which saves space on your P/PC.
Working offline
You can also work offline. Once you have downloaded new
message headers or partial messages, you can disconnect from
the server and then decide which messages to download
completely.
The next time you connect, Inbox downloads the complete
messages you have marked for retrieval and sends the messages
you have composed (see Receiving messages for details).
Receiving messages
When you receive a message, double-tap it to open it.