Retrieving Messages
You have seen that ColdFusion can send
email via the CFMAIL tag. In addition to sending
email, ColdFusion can also retrieve email messages using the Post
Office Protocol (POP3) via the CFPOP tag. Using
this tag, ColdFusion can retrieve message headers, message contents
and file attachments. In essence, this allows you to use ColdFusion
to create a web-based email system, like Yahoo! Mail or Hotmail. The
CFPOP tag can also create applications such as
auto-responders and mailing-list managers.
Retrieving Message Headers
The
CFPOP tag can retrieve just the header portion of
email messages stored on a POP server. This is useful when you want
to retrieve summary information such as the message title for more
than one message. Retrieving just the message headers allows you to
avoid the overhead associated with retrieving the entire contents of
each message you retrieve. In the context of a web-based email
client, this technique is used to build a list of messages in a
user’s mailbox. You can retrieve the headers for a group of
messages by setting the ACTION attribute of the
CFPOP tag to GetHeaderOnly as
shown in Example 13-9.
Example 13-9. Retrieving Message Headers
<CFPOP ACTION="GETHEADERONLY" NAME="GetMessageHeaders" SERVER="popserver.example.com" TIMEOUT="600" USERNAME="username" PASSWORD="password"> <CFOUTPUT> <H3>#GetMessageHeaders.RecordCount# messages on the server</H3> </CFOUTPUT> <TABLE BORDER="0" CELLPADDING="3" CELLSPACING="0"> <TR> <TD><B>From<B></TD><TD> </TD><TD><B>Date</B></TD> ...
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