Palm Treo 755P User Manual page 136

4. Set any of the following preferences:
Get indicates whether to get message subjects only or
entire messages.
Ask Every Time indicates whether you want to see a dialog
box for choosing subjects only or entire messages each
time you retrieve email. If the box is unchecked, messages
are retrieved according to the option you select in the
Get pick list.
Unread messages downloads only unread mail to your device (IMAP accounts
only). If you don't choose this option and you select Get & Send, all your messages
on your provider's mail server are downloaded to your Inbox, including messages
you have already read.
Note:
Mail from last gets messages sent within the number of days you specify (default
is 3).
Download attachments allows files attached to email to be automatically
downloaded to your device. Attachments that exceed the maximum message size
cannot be downloaded.
Maximum message size sets the maximum size limit, in kilobytes (KB), for how
much of an incoming email message is downloaded. The maximum size of an
incoming message is 5KB by default (that is, the first 5KB of all incoming email
messages is downloaded), but you can enter any size up to 2,048KB
(approximately 2 megabytes, or 2MB), including attachments.
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The POP protocol does not support retrieval of unread mail only from the
server. If you have a POP email account, the Unread messages box does
not appear on the Incoming preferences screen, and VersaMail
downloads all messages regardless of whether you have read them.
Section 3C: Email