Perl

Download the Full Version of a Partial Email

Demonstrates the Chilkat MailMan.FetchFull method, which downloads the complete version of a header-only or partial Email and stores it in a second Email. The full result includes the complete body and any attachments, and the partial email must retain its UIDL. This example previews message 1 (headers only) and then downloads it in full.

Background: A common pattern is to download headers first — cheap and fast — show the user a message list, and only pull the full content when a message is actually opened. FetchFull completes that "download on demand" flow: given a partial email (which carries its UIDL), it fetches the rest from the server. This keeps bandwidth and latency low when browsing a large mailbox.

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Perl

use chilkat();

$success = 0;

#  Demonstrates the MailMan.FetchFull method, which downloads the complete version of a
#  header-only or partial Email and stores it in a second Email.  The full result includes
#  the complete body and any attachments.  The partial email must retain its UIDL.

$mailman = chilkat::CkMailMan->new();

#  Configure the POP3 server connection.
$mailman->put_MailHost("pop.example.com");
$mailman->put_MailPort(995);
$mailman->put_PopSsl(1);
$mailman->put_PopUsername('user@example.com');
$mailman->put_PopPassword("myPassword");

#  First fetch message 1 as headers only (a fast preview).  headerOnly=1.
$partialEmail = chilkat::CkEmail->new();

$success = $mailman->FetchOne(1,0,1,$partialEmail);
if ($success == 0) {
    print $mailman->lastErrorText() . "\r\n";
    exit;
}

print "Preview subject: " . $partialEmail->subject() . "\r\n";

#  Now download the complete message (body and attachments).
$fullEmail = chilkat::CkEmail->new();
$success = $mailman->FetchFull($partialEmail,$fullEmail);
if ($success == 0) {
    print $mailman->lastErrorText() . "\r\n";
    exit;
}

print "Full email NumAttachments: " . $fullEmail->get_NumAttachments() . "\r\n";

#  Note: Explicitly connecting/authenticating is optional.  Chilkat MailMan automatically
#  connects and authenticates -- using the property settings above -- whenever a server
#  operation requires it.  Calling the explicit connect/authenticate methods can still be
#  helpful to determine whether a failure occurs while connecting or while authenticating.